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Question

State true or false:
In parallelogram ABCD, the bisector of angle A meets DC in P and AB=2AD, then
APB=900

A
True
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B
False
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Solution

The correct option is A True

We have to prove that APB=90°
Opposite angles are supplementary
1+2+3+4=180° [1=2,3=4]
22+23=180°
In APB
2+3+APB=180°
APB=180°90°=90°.
Hence, the statement is true.

925461_183029_ans_b595b139ed444b5f8863c9700c5bde7b.png

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