Bisectors of interior `/_`B and exterior `/_`ACD of a `Delta`ABC intersect at the point T. prove that `/_BTC = 1/2 /_`BAC.

Bisectors of interior angleB and exterior angleACD of a triangleABC intersect at the point T. prove that angleBTC=1/2angleBAC .

A B C is a triangle. The bisector of the exterior angle at B and the bisector of /_C intersect each other at D . Prove that /_D=1/2/_A .

ABC is a triangle.The bisector of the exterior angle at B and the bisector of /_C intersect each other at D. Prove that /_D=(1)/(2)/_A

The bisectors of /_B and /_C of an isosceles Delta ABC with AB=AC intersect each other at point O. Show that the exterior angle adjacent to /_ABC is equal to /_BOC .

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

In Delta ABC,AB= AC and E is any point on the extended BC. The circumeircel of Delta ABC intersects AE at the point D. Prove that angle ACD= angle AEC .

In a Delta ABC , angle bisector of interior angle B and exterior angle C intersect at P . If angle A=70^(@) . Find angle BPC .

BO and CO are bisectors of /_B&/_C respectively of a Delta ABC, intersecting each other at O.If /_BOC=100^(@) find /_BAC .