Question

In the fig ,BC // AD .find the measure of angle x, angle y,and angle z

Answer 1

x = 120....alternate angle
y= 60....supplementary angle
z= 120
abcd is an isosceles trapezium.

Answer 2

x=120,  y=60,  z=120
You can cross check it by adding all the angles to see if they sum up to 360