X = 13, assuming they are the same length. Using the pythagorean Theorem formula (a^2 + b^2 + c^2) Plug in A and B (13, and 13). (13)^2 + (13)^2 = c^2 13 • 13 + 13 • 13 = c^2 169 + 169 = c^2 v/338 = v/c^2 (square root them both) Then you can have your answer for y, hope this helps
