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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
Pythagoras fractal tree: Step 2
Derivative and Differential - A Geometric Point of View
Truth
WC 2018
Loyd's Two-Greek-Crosses-to-a-Square Dissection
Discover Resources
CCSS IP Math I 2.8.1 Example 3
Treasure Island Puzzle
MVC -- 12.1
gul 1
Points on the Coordinate Plane: IM 6.7.11
Discover Topics
Incircle or Inscribed Circle
Interest Calculation
Parametric Curves
Binomial Distribution
Special Points