concurent wanted, _|_ diagonals in convex quadr. 1991 Kyiv City MO 8.5
Source:
July 19, 2021
geometryconcurrencyconcurrent
Problem Statement
The diagonals of the convex quadrilateral are mutually perpendicular. Through the midpoint of the sides and draw lines, which are perpendicular to the opposite sides. Prove that they intersect on line .