Question

in a oarallelohram ABCD,∆D=140 .find the measure of ∆AamdB​

Answer 1

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Step-by-step explanation:

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Answer 2

Answer:

∠A = 140

∠B = 40

Step-by-step explanation:

In a parallelogram ABCD

∠D = ∠A ( opposite angles of a parallelogram are equal)

Therefor,

∠A = ∠D = 140

∠A = 140

Then,

∠A + ∠B = 180 (Sum of the adjacent angles of a parallelogram is 180)

140 + ∠B = 180

         ∠B = 180 - 140

         ∠B = 40

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