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Geometry
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Demonstrations 2121  2140 of 2653
The Midpoint Quadrilateral Theorem
The Two Triangles Theorem
Dissection of Three Rhombic Solids into an Icosahedron, a Dodecahedron, and an Icosidodecahedron
FourPiece Dissection of Juel's Pyramid to a Prism
The rDistribution
Two Convex Polyhedra with the Same Net
Euler's Theorem for Pedal Triangles
A Theorem about Two Tangent Circles
ThreePiece Dissection of a Hill Tetrahedron into a Triangular Prism
Crossed Ladders Theorem
Dissection of a Rhombic 210hedron into a Combination of Icosahedron and Truncated Dodecahedron
Transforming One Rhombic 210hedron into Another
Gauss Map
Distances from the Centroid
Dissection of a Concave Rhombic Triacontahedron
Fuhrmann's Theorem
CalabiYau Space
26Piece Dissection of a Cube
Hanegraaf's Rectangular Block of Size 2 to a Cube Dissection
Dissection of Three Polyhedra into Two
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