Question

ABCD is a parallelogram .If angle A =(2x - 30 )° and angle D = (2x + 10)° , find angle B​

Answer 1

Answer:

ABCD is parallelogram

find the angle of B

Solve the equation

A×D

2×+ 10 =12

2×-30= 28

28× 12 = 336

Hence, the angle B is 336