In the adjacent figure, the bisectors of ZA and ZB meet in a point P. D
If ZC = 100° and ZD = 60°, find the measure of ZAPB.
Hint. 60°+100°+ZA+ ZB = 360° ZA + B = 200°
1
1
ZA+ - ZB = 100°
2 2
P
ZBAP + ZABP = 100°.
But, ZBAP + ZABP + ZAPB = 180° (why?)
Now, find ZAPB.
B
B
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