pqr + prq + qpr = 180 （ sum of all angle is 180 ）
50 + 45 + qpr = 180
qpr = 150 - 95
qpr = 85 degree
Written on Aug. 28, 2021, 10:23 p.m.
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（1st ka answer ） mpq = pqr = 50 （ alternate interiar angle ）
pqr + prq + qpr = 180 （ sum of all angle is 180 ）
50 + 45 + qpr = 180
qpr = 150 - 95
qpr = 85 degree
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