Question

given that Line AB is parallel to DC find the values of the unknown in following figures​

Answer 1

Answer:

c°=38°

b°=59°

d°=83°

Explanation:

the quadrilateral abcd is a parallelogram hence opposite angles are equal.

angle ADC= angle ABC

similarly <DAB =<DCB

angle B =76° c°=76/2=38°

angle A =118° b°=118/2=59°

in ΔAEB b+c+d=180

so d°= 83°