Sunday, August 31, 2008

Triangle Centers: Nagel Point Proof

Visual illustration
The lines connecting each vertex of a triangle ABC with the point of tangency between the opposite side and the opposite excircle are concurrent at a point called the Nagel point.

Nagel Point

See complete interactive proof with animation and key concepts at:
www.gogeometry.com/nagel_point1.htm

Level: High School, SAT Prep, College geometry