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Demonstrations 21  40 of 477
Another Variant of Kosnita's Theorem
Trisecting an Angle Using the Cycloid of Ceva
How Many Triangles in a SixPointed Star?
Spherical Pythagorean Theorem
Repeatedly Subdividing Triangles through Special Points
Halving a Triangle Perimeter
Some Polyhedra with Identical Triangular Faces
Octahedra Constructed from Eight Identical Triangles
NonEuclidean Triangle Continuum
Doubling a Distance with a Compass
Maximize the Number of Vertices in an Equilateral Triangular Lattice
Triangulating Random and Regular Polygons
Wheel Graphs with Integer Edges
Area of a Triangle in the Poincaré Disk
Triangle Altitude
Japanese Theorem for Cyclic Polygons
Radial Tiling
Rotating Pythagoras
The Pedal and Antipedal Triangles
Exact Trilinear Coordinates
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