Question

One angle of a parallelogram is 100° . find the measure of the remaining three angles...

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Answer 1

We know that sum of adjacent angle of ║gram is 180°.

• Its adjacent angle = 180 - 100 = 80°.

Angles are 100° , 80° ,100° and 80°.

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Answer 2

Let ABCD be a parallelogram

Where angleA = 100

angle C= 100 since oppo angles are equal of a parallelogram

A+B+C+D=360

100+100+B+D= 360

B+D= 360-200

B+D= 160

But B=D oppo angles are equal of a parallelogram

B+B=160

2B=160

B=80

D=B=80