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Mathematics
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Demonstrations 101  120 of 6156
Multiple Reflections in Two Mirrors
Tetration
The Insphere and Circumsphere of a Tetrahedron
Rotating Pythagoras
The Pedal and Antipedal Triangles
Nearest in a Crowd
Twenty Tetrahedra in Icosahedral Cluster
Three Pyramids That Form a Cube
Benford's Law and Data Spread
Proposition 7, Book XII, Euclid's Elements
Space Filling with a Rhombic Dodecahedron of the Second Kind
Using Rule 30 to Generate Pseudorandom Real Numbers
Exact Trilinear Coordinates
Orthologic Triangles
Escher Solid as a Puzzle
El Gordo
Knot Pattern Similar to a Lotus Kolam
Dividing a Regular Tetrahedron into Four Congruent Pieces
Ellipse Rolling inside a Circle
Ellipse Rolling around Another Ellipse
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