Let ABCD be a trapezoid, where AB and CD are parallel. Let P be a point on the side BC. Show that the parallels to AP and PD intersect through C and B to DA, respectively.
Source: Switzerland - Swiss ΜΟ 2015 p8
Tags: geometry, trapezoid, concurrency, concurrent
Let ABCD be a trapezoid, where AB and CD are parallel. Let P be a point on the side BC. Show that the parallels to AP and PD intersect through C and B to DA, respectively.