Question

Find all other angles of a parallelogram ABCD, if angle D is 60°

Answer 1

Answer:

As we know that opposite side of parallelogram are equal so

angle D = angle A= 60°

and angle B= angle C =x (let)

A+B+C+D=360°

60°+x+60°+x=360°

2x+120° = 360°

2x=360°-120°

x=240°/2

x= 120°

so angle A =60° , angle B = 120° , angle C= 120° and angle D=60°