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k a April Highlights and 2025 AoPS Online Class Information
jlacosta   0
Apr 2, 2025
Spring is in full swing and summer is right around the corner, what are your plans? At AoPS Online our schedule has new classes starting now through July, so be sure to keep your skills sharp and be prepared for the Fall school year! Check out the schedule of upcoming classes below.

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April 9th (Webinar), 4:00pm PT/7:00pm ET, Learn about Video-based Summer Camps at the Virtual Campus
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[*]April 22nd (Webinar), 4:00pm PT/7:00pm ET, Competitive Programming at AoPS (USACO).[/list]
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0 replies
jlacosta
Apr 2, 2025
0 replies
J
H
k i Adding contests to the Contest Collections
dcouchman   1
N Apr 5, 2023 by v_Enhance
Want to help AoPS remain a valuable Olympiad resource? Help us add contests to AoPS's Contest Collections.

Find instructions and a list of contests to add here: https://artofproblemsolving.com/community/c40244h1064480_contests_to_add
1 reply
dcouchman
Sep 9, 2019
v_Enhance
Apr 5, 2023
J
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k i Zero tolerance
ZetaX   49
N May 4, 2019 by NoDealsHere
Source: Use your common sense! (enough is enough)
Some users don't want to learn, some other simply ignore advises.
But please follow the following guideline:


To make it short: ALWAYS USE YOUR COMMON SENSE IF POSTING!
If you don't have common sense, don't post.


More specifically:

For new threads:


a) Good, meaningful title:
The title has to say what the problem is about in best way possible.
If that title occured already, it's definitely bad. And contest names aren't good either.
That's in fact a requirement for being able to search old problems.

Examples:
Bad titles:
- "Hard"/"Medium"/"Easy" (if you find it so cool how hard/easy it is, tell it in the post and use a title that tells us the problem)
- "Number Theory" (hey guy, guess why this forum's named that way¿ and is it the only such problem on earth¿)
- "Fibonacci" (there are millions of Fibonacci problems out there, all posted and named the same...)
- "Chinese TST 2003" (does this say anything about the problem¿)
Good titles:
- "On divisors of a³+2b³+4c³-6abc"
- "Number of solutions to x²+y²=6z²"
- "Fibonacci numbers are never squares"


b) Use search function:
Before posting a "new" problem spend at least two, better five, minutes to look if this problem was posted before. If it was, don't repost it. If you have anything important to say on topic, post it in one of the older threads.
If the thread is locked cause of this, use search function.

Update (by Amir Hossein). The best way to search for two keywords in AoPS is to input
[code]+"first keyword" +"second keyword"[/code]
so that any post containing both strings "first word" and "second form".


c) Good problem statement:
Some recent really bad post was:
[quote]$lim_{n\to 1}^{+\infty}\frac{1}{n}-lnn$[/quote]
It contains no question and no answer.
If you do this, too, you are on the best way to get your thread deleted. Write everything clearly, define where your variables come from (and define the "natural" numbers if used). Additionally read your post at least twice before submitting. After you sent it, read it again and use the Edit-Button if necessary to correct errors.


For answers to already existing threads:


d) Of any interest and with content:
Don't post things that are more trivial than completely obvious. For example, if the question is to solve $x^{3}+y^{3}=z^{3}$, do not answer with "$x=y=z=0$ is a solution" only. Either you post any kind of proof or at least something unexpected (like "$x=1337, y=481, z=42$ is the smallest solution). Someone that does not see that $x=y=z=0$ is a solution of the above without your post is completely wrong here, this is an IMO-level forum.
Similar, posting "I have solved this problem" but not posting anything else is not welcome; it even looks that you just want to show off what a genius you are.

e) Well written and checked answers:
Like c) for new threads, check your solutions at least twice for mistakes. And after sending, read it again and use the Edit-Button if necessary to correct errors.



To repeat it: ALWAYS USE YOUR COMMON SENSE IF POSTING!


Everything definitely out of range of common sense will be locked or deleted (exept for new users having less than about 42 posts, they are newbies and need/get some time to learn).

The above rules will be applied from next monday (5. march of 2007).
Feel free to discuss on this here.
49 replies
ZetaX
Feb 27, 2007
NoDealsHere
May 4, 2019
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2021 EGMO P2: f(xf(x)+y) = f(y) + x^2 for rational x, y
anser   79
N 3 minutes ago by NuMBeRaToRiC
Source: 2021 EGMO P2
Find all functions $f:\mathbb{Q}\to\mathbb{Q}$ such that the equation
\[f(xf(x)+y) = f(y) + x^2\]holds for all rational numbers $x$ and $y$.

Here, $\mathbb{Q}$ denotes the set of rational numbers.
79 replies
anser
Apr 13, 2021
NuMBeRaToRiC
3 minutes ago
J
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trolling geometry problem
iStud   3
N 8 minutes ago by iStud
Source: Monthly Contest KTOM April P3 Essay
Given a cyclic quadrilateral $ABCD$ with $BC<AD$ and $CD<AB$. Lines $BC$ and $AD$ intersect at $X$, and lines $CD$ and $AB$ intersect at $Y$. Let $E,F,G,H$ be the midpoints of sides $AB,BC,CD,DA$, respectively. Let $S$ and $T$ be points on segment $EG$ and $FH$, respectively, so that $XS$ is the angle bisector of $\angle{DXA}$ and $YT$ is the angle bisector of $\angle{DYA}$. Prove that $TS$ is parallel to $BD$ if and only if $AC$ divides $ABCD$ into two triangles with equal area.
3 replies
iStud
5 hours ago
iStud
8 minutes ago
J
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3D geometry theorem
KAME06   1
N 22 minutes ago by mathuz
Let $M$ a point in the space and $G$ the centroid of a tetrahedron $ABCD$. Prove that:
$$\frac{1}{4}(AB^2+AC^2+AD^2+BC^2+BD^2+CD^2)+4MG^2=MA^2+MB^2+MC^2+MD^2$$
1 reply
KAME06
4 hours ago
mathuz
22 minutes ago
J
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IMO Shortlist 2012, Number Theory 6
mathmdmb   42
N an hour ago by ihategeo_1969
Source: IMO Shortlist 2012, Number Theory 6
Let $x$ and $y$ be positive integers. If ${x^{2^n}}-1$ is divisible by $2^ny+1$ for every positive integer $n$, prove that $x=1$.
42 replies
mathmdmb
Jul 26, 2013
ihategeo_1969
an hour ago
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basically INAMO 2010/6
iStud   3
N 2 hours ago by iStud
Source: Monthly Contest KTOM April P1 Essay
Call $n$ kawaii if it satisfies $d(n)+\varphi(n)=n+1$ ($d(n)$ is the number of positive factors of $n$, while $\varphi(n)$ is the number of integers not more than $n$ that are relatively prime with $n$). Find all $n$ that is kawaii.
3 replies
iStud
5 hours ago
iStud
2 hours ago
J
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GCD of a sequence
oVlad   7
N 2 hours ago by grupyorum
Source: Romania EGMO TST 2017 Day 1 P2
Determine all pairs $(a,b)$ of positive integers with the following property: all of the terms of the sequence $(a^n+b^n+1)_{n\geqslant 1}$ have a greatest common divisor $d>1.$
7 replies
oVlad
Yesterday at 1:35 PM
grupyorum
2 hours ago
J
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Another System
worthawholebean   3
N 3 hours ago by P162008
Source: HMMT 2008 Guts Problem 33
Let $ a$, $ b$, $ c$ be nonzero real numbers such that $ a+b+c=0$ and $ a^3+b^3+c^3=a^5+b^5+c^5$. Find the value of
$ a^2+b^2+c^2$.
3 replies
worthawholebean
May 13, 2008
P162008
3 hours ago
J
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Inequality with three conditions
oVlad   2
N 3 hours ago by Quantum-Phantom
Source: Romania EGMO TST 2019 Day 1 P3
Let $a,b,c$ be non-negative real numbers such that \[b+c\leqslant a+1,\quad c+a\leqslant b+1,\quad a+b\leqslant c+1.\]Prove that $a^2+b^2+c^2\leqslant 2abc+1.$
2 replies
oVlad
Yesterday at 1:48 PM
Quantum-Phantom
3 hours ago
J
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GCD Functional Equation
pinetree1   61
N 3 hours ago by ihategeo_1969
Source: USA TSTST 2019 Problem 7
Let $f: \mathbb Z\to \{1, 2, \dots, 10^{100}\}$ be a function satisfying
$$\gcd(f(x), f(y)) = \gcd(f(x), x-y)$$for all integers $x$ and $y$. Show that there exist positive integers $m$ and $n$ such that $f(x) = \gcd(m+x, n)$ for all integers $x$.

Ankan Bhattacharya
61 replies
pinetree1
Jun 25, 2019
ihategeo_1969
3 hours ago
J
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An easy FE
oVlad   3
N 3 hours ago by jasperE3
Source: Romania EGMO TST 2017 Day 1 P3
Determine all functions $f:\mathbb R\to\mathbb R$ such that \[f(xy-1)+f(x)f(y)=2xy-1,\]for any real numbers $x{}$ and $y{}.$
3 replies
oVlad
Yesterday at 1:36 PM
jasperE3
3 hours ago
J
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Interesting F.E
Jackson0423   12
N 3 hours ago by jasperE3
Show that there does not exist a function
\[ f : \mathbb{R}^+ \to \mathbb{R} \]satisfying the condition that for all \( x, y \in \mathbb{R}^+ \),
\[ f(x + y^2) \geq f(x) + y. \]

~Korea 2017 P7
12 replies
Jackson0423
Apr 18, 2025
jasperE3
3 hours ago
J
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p^3 divides (a + b)^p - a^p - b^p
62861   49
N 3 hours ago by Ilikeminecraft
Source: USA January TST for IMO 2017, Problem 3
Prove that there are infinitely many triples $(a, b, p)$ of positive integers with $p$ prime, $a < p$, and $b < p$, such that $(a + b)^p - a^p - b^p$ is a multiple of $p^3$.

Noam Elkies
49 replies
62861
Feb 23, 2017
Ilikeminecraft
3 hours ago
J
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Funny easy transcendental geo
qwerty123456asdfgzxcvb   1
N 4 hours ago by golue3120
Let $\mathcal{S}$ be a logarithmic spiral centered at the origin (ie curve satisfying for any point $X$ on it, line $OX$ makes a fixed angle with the tangent to $\mathcal{S}$ at $X$). Let $\mathcal{H}$ be a rectangular hyperbola centered at the origin, scaled such that it is tangent to the logarithmic spiral at some point.

Prove that for a point $P$ on the spiral, the polar of $P$ wrt. $\mathcal{H}$ is tangent to the spiral.
1 reply
qwerty123456asdfgzxcvb
Yesterday at 7:23 PM
golue3120
4 hours ago
J
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domino question
kjhgyuio   0
4 hours ago
........
0 replies
kjhgyuio
4 hours ago
0 replies
J
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J
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Aops Geo Mocks and Geometry from Mocks (>=JMO), contests collections
parmenides51   20
N Dec 26, 2024 by parmenides51
Source: GOWACA,BMoEG, AMASCIWLOFRIAA1PD, CSMGO, AQGO, POGCHAMP, GOTEEM. Geolympiad ,GGG, Mock IMO, INMO, RMO, USAJMO, USAMO
In order all the olympiad geometry geometry mocks to be collected in one place I created Aops Geo Mocks post collection. After all a few people have spent a lot of time, preparing those mocks, testsolving and grading.

includes so far:
* USA Computational Geo Mocks - AMC, AIME, HMMT
* 2025 Mock Geometry Olympiad by Tovi Wen (tworigami) (solutions 1, solutions 2)
* 2025 Mock Geometry Test for College Competitions by Bluesoul (solutions)
* 2024 Geometry Mains Olympiad (GMO) (IMO level)
* 2024 MODS Geometry Contest
* 2024 Geo Mock - GPO by Eeightqx, ychk, xiaolu12, Wenzi, Mang, smoth_silver
* 2024 Geo Mock - SAGF (pdfs: part I, part II) by LoloChen, GeoKing , Inequality., nervy
* 2023 DGO III (pdfs: individual + team ) (Discord Geometry Olympiad ΙΙI 2023)
* 2023 DJGO II (pdfs: individual + team ) (Discord Junior Geometry Olympiad ΙIΙ 2023)
* 2023 Geo Mock - SAGF (pdfs: part I, part II) by LoloChen, GeoKing , Inequality., nervy
* 2023 Geo Mock - BMoEG - III (pdf inside zip) (Buratino's Mock of Euclidean Geometry - III 2023) by buratinogigle , parmenides51
* 2022 DGO II (pdfs: individual + team ) (Discord Geometry Olympiad ΙΙ 2022)
* 2022 DJGO I (pdfs: individual + team ) (Discord Junior Geometry Olympiad Ι 2022)
* 2022 Geo Mock - BMoEG - II (pdf) (Buratino's Mock of Euclidean Geometry - II 2022) by buratinogigle , parmenides51 (solutions)
* 2022 Geo Mock MGMA (pdf) (Make Geometry Great Again!) by LoloChen, Inequality., GeoKing , a22886 (solutions)
* 2021 GUSAMO (pdf) (Geometry Unsuccessfully Set like Ankan's: the Mock Olympiad) by i3435
* 2021 DGO (Discord Geometry Olympiad Ι 2021)
* 2021 Geo Mock - GOWACA (pdf) (Geometry Olympiad Without A Cool Acronym) by MP8148 (solutions)
* 2021 Geo Mock - BMoEG - I (pdf) (Buratino's Mock of Euclidean Geometry - I 2021) by buratinogigle , parmenides51 (solutions)
*2021 Geo Mock - AMASCIWLOFRIAA1PD (pdf) (A Mediocre and Silly Contest in Which Lack of Figures Results In An Automatic 1 Point Deduction) (solutions)
2021 Geo Mock - CSMGO (pdf) (Christmas Special Mock Geometry Olympiad) by amar_04
2020 Geo Mock - AQGO (pdf) (Aops Quarantine Geometry Olympiad) by GeoMetrix, Amar_04 , mueller.25
2020 Geo Mock - GGG4 (pdf) by AndrewWu (wu2481632)
2020 Geo Mock - POGCHAMP (pdf) (Pretty Original Geometry Contest: HAs Mediocre Problems) by tworigami , mathman3880
* 2020 Geo Mock - Computational Contest (pdf) by Tovi Wen (two origami)
2019 Geo Mock - India Forum (pdf) by GeoMetrix, Pluto1708, Naruto.D.Luffy, amar_04
2019 Geo Mock - GOTEEM (pdf) (Geometry Olympiad: Tovi and Ethan's Exam of Mathematics) by Tovi Wen, Ethan Joo
* 2019 Geo Mock - Olympiad (pdf) by Tovi Wen (two origami)
* 2018 Geo Mock - AIME (pdf) by AndrewWu (wu2481632)
2017 Geo Mock - GGG3 (pdf) by AndrewWu (wu2481632)
2017 Geo Mock - GGG1 (pdf), GG2 (pdf) by AndrewWu (wu2481632)
2015 Geolympiad Fall Contest (pdf)
2015 Geolympiad Summer Contest (pdf)
2015 Geolympiad Spring Contest (pdf)
* 2014 Geo Mock - USAJMO (pdf) by Mike Ren
* 2012 Geo Mock - USAMO (pdf) by Jinduckey, cwein3
* 2012 Geo Mock (set 1 pdf, set 2 pdf) by David Stoner

Enjoy and suggest any geo mock that I might have missed. Outside aops I collect them here

* latest entries
20 replies
parmenides51
Mar 14, 2021
parmenides51
Dec 26, 2024
J
Aops Geo Mocks and Geometry from Mocks (>=JMO), contests collections
G H J
Reveal topic tags
geometry
Mock
MOCK IMO
INMO Mock
USAMO
parmenides51
L
G H BBookmark kLocked kLocked NReply
Source: GOWACA,BMoEG, AMASCIWLOFRIAA1PD, CSMGO, AQGO, POGCHAMP, GOTEEM. Geolympiad ,GGG, Mock IMO, INMO, RMO, USAJMO, USAMO
The post below has been deleted. Click to close.
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parmenides51
30630 posts
parmenides51
#1 h  Mar 14, 2021, 12:13 AM • 45 Y
Y by pog, mathman3880, MP8148, 606234, centslordm, Sugiyem, Nofancyname, amar_04, zuss77, GorgonMathDota, sotpidot, EpicNumberTheory, Aryan27, samrocksnature, judgefan99, mijail, Hyperbolic_, megarnie, Taco12, OlympusHero, EmilXM, brickmaster8, SerdarBozdag, Triangle_Center, BVKRB-, sargamsujit, MintTea, CyclicISLscelesTrapezoid, Jalil_Huseynov, Seicchi28, Miku_, GoldenBoy03, LoloChen, GeoKing, Lamboreghini, oolite, Mahdi_Mashayekhi, TheBatmanWhoLaughs, CalciumSodium01, nguyenducmanh2705, Paramizo_Dicrominique, UI_MathZ_25, Siddharth03, Rounak_iitr, trietptm
In order all the olympiad geometry geometry mocks to be collected in one place I created Aops Geo Mocks post collection. After all a few people have spent a lot of time, preparing those mocks, testsolving and grading.

includes so far:
* USA Computational Geo Mocks - AMC, AIME, HMMT
* 2025 Mock Geometry Olympiad by Tovi Wen (tworigami) (solutions 1, solutions 2)
* 2025 Mock Geometry Test for College Competitions by Bluesoul (solutions)
* 2024 Geometry Mains Olympiad (GMO) (IMO level)
* 2024 MODS Geometry Contest
* 2024 Geo Mock - GPO by Eeightqx, ychk, xiaolu12, Wenzi, Mang, smoth_silver
* 2024 Geo Mock - SAGF (pdfs: part I, part II) by LoloChen, GeoKing , Inequality., nervy
* 2023 DGO III (pdfs: individual + team ) (Discord Geometry Olympiad ΙΙI 2023)
* 2023 DJGO II (pdfs: individual + team ) (Discord Junior Geometry Olympiad ΙIΙ 2023)
* 2023 Geo Mock - SAGF (pdfs: part I, part II) by LoloChen, GeoKing , Inequality., nervy
* 2023 Geo Mock - BMoEG - III (pdf inside zip) (Buratino's Mock of Euclidean Geometry - III 2023) by buratinogigle , parmenides51
* 2022 DGO II (pdfs: individual + team ) (Discord Geometry Olympiad ΙΙ 2022)
* 2022 DJGO I (pdfs: individual + team ) (Discord Junior Geometry Olympiad Ι 2022)
* 2022 Geo Mock - BMoEG - II (pdf) (Buratino's Mock of Euclidean Geometry - II 2022) by buratinogigle , parmenides51 (solutions)
* 2022 Geo Mock MGMA (pdf) (Make Geometry Great Again!) by LoloChen, Inequality., GeoKing , a22886 (solutions)
* 2021 GUSAMO (pdf) (Geometry Unsuccessfully Set like Ankan's: the Mock Olympiad) by i3435
* 2021 DGO (Discord Geometry Olympiad Ι 2021)
* 2021 Geo Mock - GOWACA (pdf) (Geometry Olympiad Without A Cool Acronym) by MP8148 (solutions)
* 2021 Geo Mock - BMoEG - I (pdf) (Buratino's Mock of Euclidean Geometry - I 2021) by buratinogigle , parmenides51 (solutions)
*2021 Geo Mock - AMASCIWLOFRIAA1PD (pdf) (A Mediocre and Silly Contest in Which Lack of Figures Results In An Automatic 1 Point Deduction) (solutions)
2021 Geo Mock - CSMGO (pdf) (Christmas Special Mock Geometry Olympiad) by amar_04
2020 Geo Mock - AQGO (pdf) (Aops Quarantine Geometry Olympiad) by GeoMetrix, Amar_04 , mueller.25
2020 Geo Mock - GGG4 (pdf) by AndrewWu (wu2481632)
2020 Geo Mock - POGCHAMP (pdf) (Pretty Original Geometry Contest: HAs Mediocre Problems) by tworigami , mathman3880
* 2020 Geo Mock - Computational Contest (pdf) by Tovi Wen (two origami)
2019 Geo Mock - India Forum (pdf) by GeoMetrix, Pluto1708, Naruto.D.Luffy, amar_04
2019 Geo Mock - GOTEEM (pdf) (Geometry Olympiad: Tovi and Ethan's Exam of Mathematics) by Tovi Wen, Ethan Joo
* 2019 Geo Mock - Olympiad (pdf) by Tovi Wen (two origami)
* 2018 Geo Mock - AIME (pdf) by AndrewWu (wu2481632)
2017 Geo Mock - GGG3 (pdf) by AndrewWu (wu2481632)
2017 Geo Mock - GGG1 (pdf), GG2 (pdf) by AndrewWu (wu2481632)
2015 Geolympiad Fall Contest (pdf)
2015 Geolympiad Summer Contest (pdf)
2015 Geolympiad Spring Contest (pdf)
* 2014 Geo Mock - USAJMO (pdf) by Mike Ren
* 2012 Geo Mock - USAMO (pdf) by Jinduckey, cwein3
* 2012 Geo Mock (set 1 pdf, set 2 pdf) by David Stoner

Enjoy and suggest any geo mock that I might have missed. Outside aops I collect them here

* latest entries
This post has been edited 72 times. Last edited by parmenides51, Apr 7, 2025, 6:44 AM
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pog
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pog
#2 h  Mar 14, 2021, 12:13 AM • 4 Y
Y by samrocksnature, centslordm, megarnie, parmenides51
we need more geo mocks with names like "pogchamp" and "goteem"
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parmenides51
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parmenides51
#3 h  Mar 22, 2021, 11:14 AM • 11 Y
Y by zuss77, amar_04, pog, Aritra12, samrocksnature, centslordm, Hyperbolic_, megarnie, OlympusHero, EmilXM, CalciumSodium01
an attempt to collect worthy geometry problems from unofficial contests & Mocks mentioned in Aops
it is a different post collection, from the one above, the previous collected only Geometry Mocks,
this collects only geometry problems from unofficial Math Contests (having not only geometry) posted in Aops
(more Mocks soon)

Aops Mock Contests - Geometry

It contains among others:
$\bullet$ Aops JMO Mock Contests - Geometry
$\bullet$ Aops AMO Mock Contests Ι - Geometry
$\bullet$ Aops AMO Mock Contests II - Geometry
The 2nd one contains, geometry problems from more known contests, these ones:

and the geometry problems not contained above are from
$\bullet$ 2016 APMC Shortlist [ AoPS Problem Making Contest ]
$\bullet$ 2016 EMMO - [ Every Mathematician Must Outperform ] (India)
$\bullet$ 2017-20 IMOC Shortlist - (Taiwan)
$\bullet$ 2018-19 Real IMO Shortlist by Géza Kós

also contains
$\bullet$ 2021 Gaussian IMO, by Gaussian Curvature


to be continued

* latest entries
This post has been edited 39 times. Last edited by parmenides51, Jun 4, 2021, 5:11 PM
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parmenides51
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#4 h  Mar 23, 2021, 12:50 PM • 3 Y
Y by amar_04, samrocksnature, megarnie
by mistake I copy pasted on this post so I have to recreate it :/
This post has been edited 6 times. Last edited by parmenides51, Apr 3, 2021, 10:27 AM
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Ben10_HK
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Ben10_HK
#5 h  Mar 23, 2021, 1:00 PM • 2 Y
Y by samrocksnature, megarnie
This is great. Thanks!
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parmenides51
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parmenides51
#6 h  Apr 3, 2021, 10:42 AM • 6 Y
Y by amar_04, samrocksnature, megarnie, EmilXM, BVKRB-, CalciumSodium01
I am posting this as by mistake pasted on # 4 the new edited of #3, and rewrote it :/

anyway, in order to popularise the user-created Aops Mocks, that have a few geometry problems
I included in the Aops Mock Contests - Geometry post collection,
5 categories from the more popular Mocks, for India (INMO-RMO), JMO, USAMO, IMO

$\bullet$ Aops INMO Mock Contests - Geometry (complete) (all INMO Mocks collected here)
$\bullet$ Aops Indian RMO Mock Contests - Geometry (empty yet)
$\bullet$ Aops JMO Mock Contests - Geometry (complete)
$\bullet$ Aops AMO Mock Contests Ι- Geometry (complete)
$\bullet$ Aops AMO Mock Contests ΙΙ - Geometry (complete)
$\bullet$ Aops IMO Mock Contests - Geometry (complete)

geometry contests not included in the AMO MockS above come from

enjoy the problems / start solving

Still have to check :
$\bullet$ all Mock RMOs
$\bullet$ Geo only: ELMO j,

PS. Send me a PM if you think I missed any geo mock problem worth added,
complete I believe are problems from the INMO, JMO, AMO and IMO Mocks (besides **)
This post has been edited 49 times. Last edited by parmenides51, Jun 25, 2021, 9:10 PM
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parmenides51
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#7 h  Apr 12, 2021, 7:04 PM • 3 Y
Y by amar_04, samrocksnature, megarnie
commenting just to inform you that geometry problems from

INMO , (USA) JMO, (US) AMO Mocks have been collected (see my previous comment, #6)

only RMO Mocks and IMO Mocks left to check

PS. Send me a PM if you think I missed any geo mock problem worth added
This post has been edited 3 times. Last edited by parmenides51, Apr 12, 2021, 7:07 PM
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franzliszt
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franzliszt
#8 h  Apr 12, 2021, 8:15 PM • 4 Y
Y by parmenides51, samrocksnature, megarnie, CalciumSodium01
Here is an ON GOING geo mock https://artofproblemsolving.com/community/c594864h2509786_amasciwlofriaa1pd_geometry_contest_released so don't collect the problems yet :)
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parmenides51
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#9 h  Jun 4, 2021, 5:53 PM • 3 Y
Y by L567, samrocksnature, megarnie
franzliszt wrote:
Here is an ON GOING geo mock https://artofproblemsolving.com/community/c594864h2509786_amasciwlofriaa1pd_geometry_contest_released so don't collect the problems yet :)

just added it along with it's shortisted problems

2021 Geo Mock - AMASCIWLOFRIAA1PD (pdf) (A Mediocre and Silly Contest in Which Lack of Figures Results In An Automatic 1 Point Deduction) (solutions)


Geometry Addicted may participate in buratinogigle's Olympiad Geometry Mock, which, with pleasure I help him organise, and has just started today :
BMoEG - I (2021) aka Buratino's Mock of Euclidean Geometry-I (2021)
(note: you do not have to register in order to participate / submit solutions, you just should not pass the submission's deadline)
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SerdarBozdag
892 posts
SerdarBozdag
#10 h  Jun 6, 2021, 2:24 PM • 2 Y
Y by megarnie, Mango247
Where can I find the last years questions and solutions of mocks as an example GGG4.
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parmenides51
30630 posts
parmenides51
#11 h  Jun 6, 2021, 2:38 PM • 2 Y
Y by SerdarBozdag, megarnie
for each contest you go to the corresponding post collection,
where there are links both to each problem and to the place in aops where it was first posted
in a few contests, there is a solution pdf given to the first link the contest was posted
in other contests, under each problem is posted the official solution

the link you want is below
parmenides51 wrote:
In order all the olympiad geometry geometry mocks to be collected in one place I created Aops Geo Mocks post collection. After all a few people have spent a lot of time, preparing those mocks, testsolving and grading.

includes so far:
...
2020 Geo Mock - GGG4 (pdf) by AndrewWu (wu2481632)
...
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parmenides51
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#12 h  Jun 25, 2021, 1:19 PM • 2 Y
Y by megarnie, SerdarBozdag
all latest geo mocks have been added, enjoy / start solving
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parmenides51
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parmenides51
#13 h  Aug 18, 2021, 2:16 PM • 1 Y
Y by oVlad
all latest geo mocks have been added, enjoy / start solving

namely
GOWACA (ended),
GAMC - Geometry AMC (ongoing)

and geometry problems inside Aops IMO Mock Contests - Geometry from
GIMO (ended),
OIMC (ended)

also OTJMO (OTSS #3) is worth participating, (ongoing)
This post has been edited 3 times. Last edited by parmenides51, Aug 18, 2021, 2:20 PM
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oVlad
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oVlad
#14 h  Aug 18, 2021, 2:23 PM • 1 Y
Y by parmenides51
parmenides51 wrote:
all latest geo mocks have been added, enjoy / start solving

namely
GOWACA (ended),
GAMC - Geometry AMC (ongoing)

and geometry problems from
GIMO (ended),
OIMC (ended)

also OTJMO (OTSS #3) is worth participating, (ongoing)
OIMC had two geometry problems:

P3: https://artofproblemsolving.com/community/c6h2651328p22951953

P5: https://artofproblemsolving.com/community/c6h2651336p22951969

You can also see the other problemshere. :-D
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parmenides51
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parmenides51
#15 h  Jan 3, 2022, 10:27 PM • 1 Y
Y by Noob_at_math_69_level
commenting to inform you that I have just added

2021 Discord Geometry Olympiad (that happends to appear in HSO the last days as DGO)

problems from other aops mocks of 2021 are to be added (@above soon)

PS. You might find interesting the User Created Contests forum collection
This post has been edited 4 times. Last edited by parmenides51, Jan 3, 2022, 10:32 PM
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#16 h  Oct 26, 2022, 10:12 PM • 1 Y
Y by LoloChen
lists have been updated (Geo Mocks / JMO/ AMO / IMO)

with 2022 Geo Mock MGMA,
and geometry problems from latest :
CJMO - CAMO - CIMO, DJMO - DAMO - DIMO, GJMO - GAMO - GIMO, OJIMC - OIMC, OTJMO ,
Mexican IMOck 2020 , Thailand Online
This post has been edited 7 times. Last edited by parmenides51, Oct 27, 2022, 4:16 PM
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parmenides51
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#17 h  Oct 27, 2022, 4:11 PM
Y by
geometry fans may sing up here for upcoming $$BMoEG - II\ (2022):\ Buratino's\ Mock\ of\ Euclidean\ Geometry - II\ (2022)$$
BMoEG - I (2021) is great for practice

any suggestions for any aops (or not) mock contest with worthy geo problems that I might have missed above is always come
This post has been edited 2 times. Last edited by parmenides51, Oct 27, 2022, 5:15 PM
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#18 h  Jan 8, 2023, 9:31 AM • 2 Y
Y by nervy, GeoKing
2022 Geo Mocks have been added,

reminder this post may be found using tag parmenides51 in HSO

First Geo Mock in 2023: SAGF 2023
Quote:
$Dates: $
$SAGF$ $Part$ $1$: $ 18: 00,22th – 18:00,25th$ January $2023$ (GMT+3)
$SAGF$ $Part$ $2$: $ 18: 00,28th – 18:00,31th$ January $ 2023$ (GMT+3)
(Please note that everything is in GMT+3 timezone.)
This post has been edited 1 time. Last edited by parmenides51, Jan 8, 2023, 9:53 AM
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parmenides51
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#19 h  Jan 25, 2024, 4:53 PM • 2 Y
Y by nervy, LoloChen
I just updated with the latest aops geo mocks

if you have seen anywhere in internet any geometry mock (proof contest) with original problems,

sent us the link or the problems to make the above geo mock collection richer

as always ...

enjoy / start solving

New Geo Mock soon
This post has been edited 3 times. Last edited by parmenides51, Jan 25, 2024, 5:53 PM
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Diaoest
62 posts
Diaoest
#20 h  Dec 26, 2024, 6:07 AM
Y by
That web site is god.
How about other topics?
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parmenides51
30630 posts
parmenides51
#21 h  Dec 26, 2024, 8:16 AM • 1 Y
Y by Diaoest
@above See here
This post has been edited 2 times. Last edited by parmenides51, Dec 26, 2024, 9:18 AM
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