Question

ABCD is a parallelogram. Find the values of x, y and z.

Answer 1

Step-by-step explanation:

here

AD // BC

so z = 30° ( alternative angle)

also x+ 100 = 180( linear pair)

so x = 80

now in ∆ BOC

30+x + y = 180° ( sum of angle of∆ )

30+80+y=180

y= 180 - 110

y = 70