Math, asked by sonil12345, 1 year ago

how to do this question

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Answered by khan78631930q

let E as a point on PR
join AP
angle QPR+angle AEP=180 (co-interior )
102+angle AEP=180
AngleAEP=180-102=78
angleABC=angleAEP (alternate angle )
angle ABC=78

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