Question

A B C D is a Parallelogan whose angle B=40 degree, find the measures of the others angles.​

Answer 1

Angles of parallelogram are 40° , 140° ,40° and 140°.

Explaination:

We know that the sum of consecutive angle are 180°

So,

A + B = 180°

A + 40 = 180°

A = 180° - 40°

A = 140°

We know that in parallelogram opposite angles are equal.

So, A = C and B = D

Therefore,

A = C = 140°

B = D = 40°

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