Proposition Given a triangle ABC and a trapezoid ADEC (DE // AC), as shown. AE and CD meet at F, and BF meets DE and AC at N and M respectively. Prove that M and N are the midpoints of AC and DE respectively.
See complete Problem Trapezoid, Triangle, Diagonals, Midpoints. Dynamic Geometry. Step-by-Step construction, Manipulation, and animation. Prove proposition.. Level: High School, SAT Prep, College geometry