equilateral, median AM=d(M,AB)+d(M,AC) - All-Russian MO 2004 Regional (R4) 8.3
Source:
September 27, 2024
geometryEquilateralmedian
Problem Statement
In an acute triangle, the distance from the midpoint of any side to the opposite vertex is equal to the sum of the distances from it to sides of the triangle. Prove that this triangle is equilateral.