Question

In a quadrilateral ABCD, (A + C) is 2 times (B + D). If A = 40', then B -
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Answer 1

HEYA MATE YOUR ANSWER IS

∠A+∠C=2(∠B+∠D)

Also-

∠A+∠B+∠C+∠D=360

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∠A+∠C∠B+∠D=360

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2(∠B+∠D)+(∠B+∠D)=360

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⇒3(∠B+∠D)=360

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∠B+∠D=120

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∠B+40

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=120

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⇒∠B=80

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HOPE THIS HELPS ❤️

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