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Triangles
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Demonstrations 81  100 of 466
Triangle Interior Angle Sum by Paper Folding
Area of a Triangle
Periodic Orbit for Acute Triangles
Dougall Theorem II: Inscribed Triangles
Six Triangle Orbits
The Brocard Points and Neuberg Circles of a Triangle
What Triangles Are in the Triangle?
Inscribe a Scaled Copy of a Triangle in Another Triangle
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
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