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  • ...n [[geometry]], and is one of the many tools in a good geometer's arsenal. A very large number of geometry problems can be solved by building right tria In these proofs, we will let <math>ABC </math> be any right triangle with a right angle at <math>{} C </math>.
    5 KB (886 words) - 21:12, 22 January 2024
  • ...and the third is tangent to the first circle and the <math>y</math>-axis. A circle of radius <math>r > s</math> is tangent to both axes and to the seco <math> (\mathrm {A}) \ 5 \qquad (\mathrm {B}) \ 6 \qquad (\mathrm {C})\ 8 \qquad (\mathrm {D})
    2 KB (307 words) - 15:30, 30 March 2024
  • If you don't know much about how to edit a wiki, you might want to read the [[AoPS_Wiki:Tutorial|tutorial]] and the [[
    2 KB (258 words) - 14:05, 15 November 2023
  • <math>\textbf{(A)}\ 1 \qquad\textbf{(B)}\ 2\qquad\textbf{(C)}\ 3\qquad\textbf{(D)}\ 4\qquad\ {{AMC10 box|year=2016|ab=A|num-b=1|num-a=3}}
    1 KB (190 words) - 10:58, 16 June 2023
  • <math>\textbf{(A)}\ \$37.50 \qquad\textbf{(B)}\ \$50.00\qquad\textbf{(C)}\ \$87.50\qquad\tex {{AMC10 box|year=2016|ab=A|num-b=2|num-a=4}}
    1 KB (176 words) - 10:58, 16 June 2023
  • <math>\textbf{(A) } -\frac{3}{8} \qquad \textbf{(B) } -\frac{1}{40} \qquad \textbf{(C) } 0 \ Do note that the denominator of the answer will be a multiple of 5 and 8 (40) and that the answer will also be negative. The onl
    2 KB (257 words) - 10:57, 16 June 2023
  • A rectangular box has integer side lengths in the ratio <math>1: 3: 4</math>. <math>\textbf{(A)}\ 48\qquad\textbf{(B)}\ 56\qquad\textbf{(C)}\ 64\qquad\textbf{(D)}\ 96\qqu
    1 KB (184 words) - 13:58, 22 August 2023
  • <math>\textbf{(A)}\ 13\qquad\textbf{(B)}\ 26\qquad\textbf{(C)}\ 102\qquad\textbf{(D)}\ 103\q ...act 1. Because 2 appears 10 times as a tens digit and 2 appears 3 times as a units digit, the answer is <math>10\cdot 10+1\cdot 3=\boxed{\textbf{(D) }10
    967 bytes (143 words) - 03:18, 27 June 2023
  • <math>\textbf{(A)}\ 50 \qquad\textbf{(B)}\ 60 \qquad\textbf{(C)}\ 75 \qquad\textbf{(D)}\ 90 Note: if the mean of a set is in the set, it can be discarded and the mean of the remaining number
    2 KB (268 words) - 18:19, 27 September 2023
  • <math>\textbf{(A)}\ 20 \qquad\textbf{(B)}\ 30\qquad\textbf{(C)}\ 35\qquad\textbf{(D)}\ 40\qq {{AMC10 box|year=2016|ab=A|num-b=7|num-a=9}}
    1 KB (169 words) - 14:59, 8 August 2021
  • A triangular array of <math>2016</math> coins has <math>1</math> coin in the <math>\textbf{(A)}\ 6\qquad\textbf{(B)}\ 7\qquad\textbf{(C)}\ 8\qquad\textbf{(D)}\ 9\qquad\t
    2 KB (315 words) - 15:34, 18 June 2022
  • A rug is made with three different colors as shown. The areas of the three di <math>\textbf{(A) } 1 \qquad \textbf{(B) } 2 \qquad \textbf{(C) } 4 \qquad \textbf{(D) } 6 \
    2 KB (337 words) - 14:56, 25 June 2023
  • <math>\textbf{(A)}\ 4\dfrac{3}{5} \qquad \textbf{(B)}\ 5\qquad \textbf{(C)}\ 5\dfrac{1}{4} \ ...{2}</math>, and slide the left and right pieces next to each other to form a parallelogram with base <math>1</math> and height <math>\frac{8}{2}</math>.
    8 KB (1,016 words) - 00:17, 31 December 2023
  • .../math>. Which of the following transformations will return <math>\triangle A''B''C''</math> to <math>\triangle ABC</math>? <math>\textbf{(A)}</math> counterclockwise rotation about the origin by <math>90^{\circ}</ma
    1 KB (235 words) - 14:52, 25 June 2023
  • ...<math>1</math> and <math>2016</math>, inclusive. Which of the following is a correct statement about the probability <math>p</math> that the product of <math>\textbf{(A)}\ p<\dfrac{1}{8}\qquad\textbf{(B)}\ p=\dfrac{1}{8}\qquad\textbf{(C)}\ \dfr
    2 KB (297 words) - 14:54, 25 June 2023
  • Five friends sat in a movie theater in a row containing <math>5</math> seats, numbered <math>1</math> to <math>5</ma <math>\textbf{(A) }1 \qquad \textbf{(B) } 2 \qquad \textbf{(C) } 3 \qquad \textbf{(D) } 4\qq
    2 KB (402 words) - 14:54, 25 June 2023
  • * [http://www.mindresearch.org/gameathon/ Game-a-thon] challenges students to design and build math games in this national c * [http://www.mathnasium.com/trimathlon National Trimathlon] is a fun filled Math Competition for kids in grades 3 through 6.
    4 KB (473 words) - 16:14, 1 May 2024
  • ...ath/puzzle competitions for middle schoolers with a focus towards creating a fun and collaborative environment. * [[AMC 8]] hosted by the [[American Mathematics Competitions]] is a very large middle school math contest taken in-school. ([http://www.maa.org
    7 KB (792 words) - 10:14, 23 April 2024
  • * [http://homeschoolmathcontests.com Homeschool Math Contests] has a chart of math contests open to individuals (homeschooled and otherwise), an * [[Mu Alpha Theta]] -- hosts both local and a national competition.
    5 KB (583 words) - 17:26, 21 February 2024
  • This is a directory of internal links to more helpful pages about mathematics competi
    4 KB (406 words) - 11:20, 26 February 2021

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