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Triangle: exterior angle
Author:
Joe Stanford
GeoGebra
New Resources
"Compressed" Astroid as Envelope
Stairs (Optical Illusion)
Napoleon's Theorem
Construct a Square
Isosceles Triangle: Quick Construction
Discover Resources
Regular Hexagon
Points of Concurrency
Exploring Friction
GettingStarted
Untitled
Discover Topics
Median Line
Area
Linear Regression
Sequences and Series
Geometric Distribution