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Simson's Line
Author:
spkwan
What is the locus of D if the feet of perpendiculars dropped from D to the 3 sides of the triangle are collinear? Drag D and make your conjecture.
GeoGebra
New Resources
Angles and Intersecting Lines: Quick Investigation
Construct a Square
Rotating Points (Optical Illusion)
Drag that Point!
Isosceles Triangle: Quick Construction
Discover Resources
Completing the square
SINUS
Similarity 2
RotationsP2
JackieAlford_UnMessUpableFigures1Shape1
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Function Graph
Functions
Algebra
Geometric Transformations
Coordinates