Question

abcd is a quadrilateral in which the bisector of angle a and b bisect at point p and angle c = 100° and angle d = 60 ° find angle apb

Answer 1

In quadrilateral ABCD, AP and BP are the biscetors of A and B then APB=1/2 C+D.Itz a theorem

Therefore, 100+60÷2=80