BO and CO are external bisector of `angleB` and `angleC` of `triangle`ABC intersecting at O. If `angleA=60^@, angleABC=70^@`, Find `angleBOC`

BO and CO are external bisector of angleB and angleC of triangle ABC intersecting at O. If internal bisector of angleB and angleC intersect at P, prove that anglePBO=90^@ and angleBOC+angleBPC=180^@

The internal bisectors of angleB and angleC of DeltaABC meet at O. If angleA=80^(@) then angleBOC is :

The angle bisector of angleABC&angleBCA of triangle DeltaABC intersect at point O. What is the angle angleBOC .

In triangleABC the bisectors of angleB and angleC intersect at I if angleA=70^(@) then angle BIC=…………..

In triangleABC the bisectors of angleB and angleC intersect at I if angleA=70^(@) then angle BIC=…………..

In Delta ABC , angleA = 76^@ , angleB = 48^@ , then angleC =

ABC is a triangle. The bisectors of the internal angle angleB and external angle angleC Intersect at D. If angleBDC= 50^@ , then angleA is