20 POINTS AVAILABLE
Is this a 45-45-90 triangle?
a. Yes, it looks like an isosceles right triangle.
b. Yes, x=9 so this is an isosceles right triangle (45-45-90).
c. No, x = 8 so the legs are not the same measure which means it cannot have the same base angle measures.
d. There is not enough information to determine the angle measures.