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Polyhedra
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Demonstrations 21  40 of 673
Open Flexible Frame Based on a Rhombic Dodecahedron
A OneParameter Family of Zonohedra
Theorem on the Dihedral Angles of an Isosceles Tetrahedron
Properties of Isosceles Tetrahedra
RightAngled Tetrahedron
Construct a Dihedral Angle of a Tetrahedron Given Its Plane Angles at a Vertex
Altitude of a Tetrahedron Given Its Edges
Colored Spherical Projections of Polyhedra
Parallelepiped with Edges on Three Skew Lines
Intersection of a Plane and a Tetrahedron
Completing a Tetrahedron to a Parallelepiped
Relations between Plane Angles and Solid Angles in a Trihedron
Supplementary Solid Angles for Trihedron
Regular Tetrahedra Formed by Lattice Points Equidistant from the Origin
Sines of the Dihedral Angles of a Tetrahedron
Hanegraaf's Dissection of a Truncated Octahedron into a Hexagonal Prism
Tetrahedron Centers
Mapping Sierpinski Triangles onto Polyhedra
Generating CubeLike Structures from 3Tuples of Equidistant Points on a Circle
Constructing a Square Pyramid without Gluing
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