Question

In a parellologram ABCD, if angle A is 4/5 of angle B . then what is angle A
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Answer 1

Answer:

angle B=4/5x=80degree(Ans).

Step-by-step explanation:

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Answer 2

Answer:

∠B = 100° & ∠A = 80°

Step-by-step explanation:

In a parallelogram ABCD, ∠A = ⅘∠B

We know that,

∠A + ∠B = 180°

⅘∠B + ∠B = 180°

∠B(1 + ⅘) = 180

9/5∠B = 180°

∠B = 180 × 5/9

∠B = 100°

∠B = 100° & ∠A = 80°