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In triangle PQR, let X be the intersection of the angle bisector of angle P with side QR, and let Y be the foot of the perpendicular from X to line PR.  If PQ = 9, QR = 9, and PR = 9, then compute the length of XY.

 Jun 18, 2023
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\(\mbox{XY=} \frac{180}{4} \mbox{=} \mbox{45} \)

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 Jun 18, 2023
edited by xud33  Jun 18, 2023
edited by xud33  Jun 18, 2023
edited by xud33  Jun 18, 2023

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