Mathematics, 19.04.2021 14:00, j015

(AD) and (BC) are parallel lines. (AC) is the angle bisector of DÂB.
[BD) is the angle bisector of ABC.
Prove that [BD] is perpendicular to (AC).

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(AD) and (BC) are parallel lines. (AC) is the angle bisector of DÂB.
[BD) is the angle bisect...