Skip to content / Đến nội dung
ThichHocToan.com

MathNet 2024-part-05 — 168 problems (EN–VI) Question 93

Math Olympiad Vault · MathNet 2024-part-05 — 168 problems (EN–VI)

Question 93

Let $ABC$ be a triangle such that the angular bisector of $\angle BAC$, the $B$-median and the perpendicular bisector of $AB$ intersect at a single point $X$. Let $H$ be the orthocenter of $ABC$. Show that $\angle BXH = 90^\circ$.