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Triangles
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Demonstrations 101  120 of 477
Almost Equilateral Triangles
Generalized Inscribed and Escribed Triangles
Divide Triangles
Fermat Point for Many Points
The Eratosthenes Machine for Finding the Cube Root of Two
Digital Kaleidoscope: Triangular Tiling with Textures
1992 CMO Problem: Cocircular Orthocenters
The Fourth Harmonic Point of a Triangle
Dissection of an Irregular Triangle to a Square
Curry Triangle Paradox
Triangle to Parallelogram
Pólya's Mechanical Model for the Fermat Point
A Device that Illustrates Pythagoras' Theorem
Iterated Subdivision of a Triangle
YMCA Logo
The Sum of the Sines of a Sum and Difference of Two Angles
NinePoint Circle in the Complex Plane
The Interior Angles of a Triangle Sum to Pi
ColorChanging Origami Star
Trigonometric Functions for a Right Triangle
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