If m∠XWY = 20, m∠XWZ = 40, and XY = 16, what is the value of YZ? Three rays extend out from W through X, Y, and Z. Segments are drawn to connect the rays, creating 2 right triangles.
XWY=20 XWZ=40, XWY is half of XWZ, which means ZWY =20. Now you can say that the triangles are congruent through the AAS postulate, so you know that YZ-16 because of CPCTC
