Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Jan 30, 2014
Let ABCD be a cyclic quadrilateral. Let P be the intersection of overline(AD and overline(BC), and let Q be the intersection of overline(AB) and overline(CD). The angle bisectors of angle DPC and angle AQD are perpendicular.