Answer:
x = z = 45°, y = 90°
Step-by-step explanation:
This is an isosceles triangle ( given 2 equal sides )
Hence x = z ( base angles )
z and 135° form a straight angle and are supplementary
z = 180° - 135° = 45°
hence x = z = 45°
the sum of the 3 angles in the triangle = 180°
To find y subtract the sum of x and z from 180
y = 180° - (45 + 45)° = 180° - 90° = 90°
