Question

In a parallelogram ABCD,angle A is double of Angle B. Find all angles of the parallelogram.

Answer 1

let x be the b angle

so angle a = 2x

angle A = angle C ( opposite angles are equal)

angle B = angle D

so 2x+x+2x+x=360°

6x=360°

x = 60°

so angle B and D = 60°

and angle A and C = 120°


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Answer 2

Let B be x

so A will be 2x

so D will be x

so c will be 2x


As we know that sum of angle of parallelogram is 360°..

So x+2x+x+2x=360°

so 6x=360°

therefore x=360°/6=60°

so B will be 60°

A will be 120°

C will be 120°

D will be 60°

hope it will help you. ......

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