## Elementary Geometry for College Students (6th Edition)

YZ = 8 XY= 8$\sqrt 2$
By the given Figure $\angle Z=90^{\circ}$ given $\angle X = 45^{\circ}$ given So remaining $\angle Y = 45^{\circ}$ now XZ = 8 given YZ = 8 XY= 8$\sqrt 2$ By Theorem 5.5.1/ (45-45-90 Theorem)