Question

the bisector of angle A and angle B meet at a point P. If angle C=100° and angle D=60° ,find the measure of angle APB.

Answer 1

whole angle will be 100 and whole angle b will be 60 so the angular bisectors make the angle 50 and 30 respectively.

now, in triangle APB  angle sum property
                                        180 =50+30+apb
                                         apb=180-80
                                         angle apb=100

Answer 2

its very easy
it is a //gm abcd.
angle bisector of a and b intersect at point p
ang....a= c=100.
any.......b=d=60.
so and...bisector a=30 and b=50...
come in ∆apb ang...p=180- 30+50
ang..p=100 degree


hope it will help u:-) any... stands for angle