Bisectors of two adjacent angles Aand Bof a quadrilateral ABCDintersect each other at a point P. Which one of the following is correct ?



[ A ]    2∠APB= ∠C + ÐD
right
[ B ]    ∠APB = ∠C+ ∠D
[ C ]    ∠APB=180° – (∠C+ ∠B)
[ D ]    ∠APB=180° – (∠C+ ∠D)
Answer : Option A
Explanation :

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