Create the page "Zxy" on this wiki! See also the search results found.

• 1974 USAMO Problems/Problem 4
  <math>P'(TOTAL) = P'(A) + P'(B) + P'(C) = yx + y(1-x)(1-z)y + (1-y)zxy</math>
  6 KB (1,037 words) - 23:42, 11 May 2018
• 2011 USAJMO Problems/Problem 3
  ...Y=60^{\circ}</math>. Since <math>ZX=ZY</math> it follows that <math>\Delta ZXY</math> is and equilateral triangle with center <math>H</math>.
  15 KB (2,593 words) - 13:37, 29 January 2021
• 2012 AMC 12A Problems/Problem 16
  ...11 \cdot XY \Longrightarrow XY=\frac{20r}{11}</math>. Since <math>\angle ZXY = \angle ZOY</math> and <math>\angle XZO = \angle XYO</math>. From this, we
  9 KB (1,496 words) - 02:40, 2 October 2022