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• USAMO historical results
  **Dai Yang
  10 KB (1,317 words) - 08:16, 23 April 2024
• North Carolina MathCounts
  * 2014 - Zack Lee (23), Matthew Dai (47), Sahil Patel, Emily Wen, Coach: John Armpriester
  4 KB (582 words) - 21:40, 14 May 2024
• 1985 IMO Problems/Problem 1
  ...\angle DSI=\angle DSP = \frac{1}{2} \angle DCP=\frac{1}{2} \angle A=\angle DAI</math> so DASI is concyclic.
  4 KB (684 words) - 07:28, 3 October 2021
• 2004 USAMO Problems/Problem 6
  ...math>\omega</math> is inscribed in <math>ABCD</math>, we get <math>m\angle DAI = m\angle IAB = a</math>, <math>m\angle ABI = m\angle IBC = b</math>, <math
  4 KB (700 words) - 23:18, 28 November 2014
• Northeastern WOOTers Mock AIME I Problems
  ...a random lillypad every minute. If the expected number of minutes left for Dai to live is <math>\frac{m}{n}</math>, where <math>m</math> and <math>n</math ...yominos randomly until he can no longer do so. Let the probability that he will cover the entire board be <math>p</math>. Then, <math>p</math> can be expre
  8 KB (1,336 words) - 09:10, 30 May 2020
• 2016 AIME I Problems/Problem 6
  ...Therefore, <math>\angle AID=\alpha+\gamma</math>. Therefore, <math>\angle DAI=\angle AID=\alpha+\gamma</math>, so <math>\triangle AID</math> must be isos ...eveal that <math>\triangle ABC</math> must be obtuse (as an acute triangle will result in <math>LI</math> being greater than <math>DL</math>) and that <mat
  14 KB (2,397 words) - 20:04, 27 August 2023
• Northeastern WOOTers Mock AIME I Problems/Problem 8
  ...a random lillypad every minute. If the expected number of minutes left for Dai to live is <math>\frac{m}{n}</math>, where <math>m</math> and <math>n</math
  545 bytes (85 words) - 23:24, 2 March 2020
• Nhakhoaparis
  ...iều đồ ăn chua, đồ ngọt, nước có gas. Không ăn đồ quá dai, cứng, làm tổn thương nướu. Chọn thực phẩm giàu Canxi.
  5 KB (1,261 words) - 05:15, 7 January 2021
• 2023 AMC 10B Problems/Problem 7
  ...ath> bisects angle <math>\angle{DAB}</math>, so <math>\angle{BAI} = \angle{DAI} = 45</math>. Subtracting <math>45</math> from <math>80</math>, we get <mat
  4 KB (577 words) - 02:09, 27 November 2023