in the given figure ABCD is a parallelogram with angle A is equal to 70 degree the bisectors of Angle B and angle C meet at P inside the parallelogram find the measure of angle BPC
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Answer:
In parallelogram ABCD,
opposite angles of parallelogram are equal
angle BAD=angle BCD=70
angle ADC=angle ABC
sum of all angles of a parallelogram is 360°,
BAD+ABC+BCD+ADC=360
70+ABC+70+ABC=360. (given above)
140+2ABC=360
2ABC=360-140
2ABC=220
ABC=110
now,
PB and PC are bisectors of B and C,
angle PBC=1/2 angle ABC
PBC=1/2*60
PBC=30°
angle PCB=1/2 angle BCD
PCB=1/2*110
PCB=55°
in ∆PCB,
sum of all angles of a triangle is 180°.
PCB+PBC+BPC=180
30+55+BPC=180
85+BPC=180
BPC=180-85
BPC=95°
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even mine same question
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so I am also coping which someone answered
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