Variable point on the median
Source: APMO 2019 P3
June 11, 2019
geometryAPMO
Problem Statement
Let be a scalene triangle with circumcircle . Let be the midpoint of . A variable point is selected in the line segment . The circumcircles of triangles and intersect again at points and , respectively. The lines and intersect (a second time) the circumcircles to triangles and at and , respectively. Prove that as varies, the circumcircle of passes through a fixed point distinct from .