Difference between revisions of "2020 AIME I Problems"

(Problem 1)
(Problem 1)
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==Problem 1==
 
==Problem 1==
 
In <math>\triangle{ABC}</math> with <math>AB = AC</math>, point <math>D</math> lies strictly between <math>A</math> and <math>C</math> on side <math>\overline{AC}</math>, and point <math>E</math> lies strictly between <math>A</math> and <math>B</math> on side <math>\overline{AB}</math> such that <math>AE=ED=DB=BC</math>. The degree measure of <math>\angle{ABC}</math> is <math>\frac{m}{n}</math>, where <math>m</math> and <math>n</math> are relatively prime positive integers. Find <math>m</math> + <math>n</math>.
 
In <math>\triangle{ABC}</math> with <math>AB = AC</math>, point <math>D</math> lies strictly between <math>A</math> and <math>C</math> on side <math>\overline{AC}</math>, and point <math>E</math> lies strictly between <math>A</math> and <math>B</math> on side <math>\overline{AB}</math> such that <math>AE=ED=DB=BC</math>. The degree measure of <math>\angle{ABC}</math> is <math>\frac{m}{n}</math>, where <math>m</math> and <math>n</math> are relatively prime positive integers. Find <math>m</math> + <math>n</math>.
 +
 
[[2020 AIME I Problems/Problem 1 | Solution]]
 
[[2020 AIME I Problems/Problem 1 | Solution]]
  

Revision as of 14:45, 12 March 2020

2020 AIME I (Answer Key)
Printable version | AoPS Contest CollectionsPDF

Instructions

  1. This is a 15-question, 3-hour examination. All answers are integers ranging from $000$ to $999$, inclusive. Your score will be the number of correct answers; i.e., there is neither partial credit nor a penalty for wrong answers.
  2. No aids other than scratch paper, graph paper, ruler, compass, and protractor are permitted. In particular, calculators and computers are not permitted.
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Problem 1

In $\triangle{ABC}$ with $AB = AC$, point $D$ lies strictly between $A$ and $C$ on side $\overline{AC}$, and point $E$ lies strictly between $A$ and $B$ on side $\overline{AB}$ such that $AE=ED=DB=BC$. The degree measure of $\angle{ABC}$ is $\frac{m}{n}$, where $m$ and $n$ are relatively prime positive integers. Find $m$ + $n$.

Solution

Problem 2

Solution

Problem 3

Solution

Problem 4

Solution

Problem 5

Solution

Problem 6

Solution

Problem 7

Solution

Problem 8

Solution

Problem 9

Solution

Problem 10

Solution

Problem 11

Solution

Problem 12

Solution

Problem 13

Solution

Problem 14

Solution

Problem 15

Solution

2020 AIME I (ProblemsAnswer KeyResources)
Preceded by
2019 AIME II
Followed by
2020 AIME II
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
All AIME Problems and Solutions

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