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GeoGebra
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GeoGebra
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Perpendicular
Author:
John Sincak
GeoGebra
New Resources
Bottema's Theorem
Napoleon's Theorem
Stairs (Optical Illusion)
Cross Product in 2D and 3D
Introduction
Discover Resources
Overlapping Parallelograms
Animating a circle and sine wave
Problem 1 from the EGMO2017
Rectangular construction
Rechenschieber
Discover Topics
Variance
Polygons
Congruence
Quadratic Equations
Incircle or Inscribed Circle