MARC the maternal sectors of R and meet at and the external hector and C meet at prove thal BACHOC-180 anterior angle at the

In a ABC, the internal bisectors of /_B and /_C met at P and the external bisectors of /_B and /_C meet at Q. Prove that /_BPC+/_BQC=180^(@)

In a triangle A B C , the internal bisectors of /_B\ a n d\ /_C meet at P and the external bisectors of /_B\ a n d\ /_C meet at Q . Prove that /_B P C+\ /_B Q C=180^0

The internal bisector of angle A of Delta ABC meets BC at D and the external bisector of angle A meets BC produced at E. Prove that (BD)/(BE) = (CD)/(CE) .

Delta ABC ,angle B external angle C meets at P angle A = 80 " then " angle BPC = ?

In triangle ABC,the bisector of interior angle A and the bisector angle C meet at point O. Prove that angle AOC=(1)/(2)angleB

In triangle ABC,the bisector of interior angle A and the bisector angle C meet at point O. Prove that angle AOC=(1)/(2)angleB

The sides AB and AC of a triangle ABC are produced, and the bisectors of the external angles at B and C meet at P. Prove that if AB gt AC , then PC gt PB .

Bisectors of angles A and B of a parallelogram ABCD meet at point M. Prove that angleAMB=(1)/(2)(angleC+angleD)

Bisectors of angles A and B of a parallelogram ABCD meet at point M. Prove that angleAMB=(1)/(2)(angleC+angleD)