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Triangle Inequality
Author:
Marcia Cooke
Are AB plus BC always greater than AC? Are AC plus BC always greater than AB? Are AB plus AC always greater than BC?
GeoGebra
New Resources
Napoleon's Theorem
Ellipse as Envelope - Correspondence Method
Pelecoid
van Aubel's Theorem
Stairs (Optical Illusion)
Discover Resources
Inscribed Angles Intercepting Arcs Conjectures
Barycenter
Activity 3.5.2 - Square
Step 5
Inversion
Discover Topics
Secant Line or Secant
Parametric Curves
Surface
Natural Numbers
Symmetry