Prove that angle between internal bisector of one base angle and the external bisector of the other base angle of - Maths - Lines and Angles

Question

Prove that angle between internal bisector of one base angle and
the external bisector of the other base angle of a triangle is
equal to half of the vertical angle

Rahul K · Accepted Answer

Dear Student,
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Regards

Prove that angle between internal bisector of one base angle and the external bisector of the other base angle of a triangle is equal to half of the vertical angle.