Geometry Interactive Illustration: Blanchet Theorem. Triangle, Altitude, Cevian, Angle Bisector.

In a triangle ABC, where BD is the altitude to AC and P is any point on BD, AP meets BC at E, and CP meets AB at F. Prove that BD is the bisector of angle EDF. Click the Next button below to start the illustration.
	See Also:
	Geometry Flash Animation.
	GeoGebra Constructions Index HTML5 Animation for Tablets (iPad, Nexus..)
	iPad Apps: Apollonius, Interactive Geometry Software IGS Index. Theorems and Problems with Apollonius for iPad.
	Nine-Point Center, Nine-Point Circle, Euler Line, HTML5 Animation for iPad. Circumcenter, Centroid, Orthocenter.