PLEASE PLEASE HELP!

In triangle XYZ, z2 = x2 + y2.

Which equation is true about the measure of the angles of the triangle?

The measure of angle XYZ is equal to 100 degrees
The measure of angle XZY is equal to 90 degrees
The measure of angle XYZ plus the measure of angle YXZ is equal to 80 degrees
The measure of angle XYZ plus the measure of angle YXZ is equal to 70 degrees

PLEASE PLEASE HELP In triangle XYZ z2 x2 y2 Which equation is true about the measure of the angles of the triangle The measure of angle XYZ is equal to 100 degr class=