MathDB

BdMO National Higher Secondary 2019/9

Source: BdMO National Higher Secondary 2019/9

March 4, 2019

geometry

Problem Statement

Let

ABCD

is a convex quadrilateral.The internal angle bisectors of

\angle {BAC}

and

\angle {BDC}

meets at

P

\angle {APB}=\angle {CPD}

.Prove that

AB+BD=AC+CD