Posted by
**sunny** on
.

In a triangle ABC , the internal bisectors of angles B and C meet at P and the external bisectors of the angles B and C meet at Q. prove that:

angle BPC + angle BQC = 2 rt. angles.

Wednesday

March 29, 2017
Posted by
**sunny** on
.

In a triangle ABC , the internal bisectors of angles B and C meet at P and the external bisectors of the angles B and C meet at Q. prove that:

angle BPC + angle BQC = 2 rt. angles.

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