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The Wallace-Simson Line
Author:
Steve Phelps
When the pedal point P is on the circumcircle of triangle ABC, the pedal triangle degenerates into a line through points D, E, and F. Click on the small "play" icon in the lower left corner.
GeoGebra
New Resources
Parallel or Not? (V2)
Play C3 E3 G3 C4_C4
Introduction
van Aubel's Theorem
Simplifying Radicals: Geometric Thin Slice
Discover Resources
Oriented rectangles
Quadrilateral Interior Angles Sum_feedback
RT.2 Altitude Investigation
Eiffel Tower Parabola pt. 2
GGB Script: Slope field explorer
Discover Topics
Vectors 2D (Two-Dimensional)
Parallelogram
Fractal Geometry
Area
Integral Calculus