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Demonstrations 1 - 20 of 553
Sum of the Squares of the Sides of a Projected Regular Tetrahedron
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A Shapeshifting Flexible Frame
Op Art Block in Three-Point Perspective
Three Coplanar Bisectors in Unit Sphere Construction
Op Art with Two Blocks in Perspective
Op Art with Block in Perspective
Three Edge-to-Edge Sphere Tilings with Right Triangles
Three Spherical Triangles of Equal Area
Dissection of a Composite Spherical Triangle
Dissection of a Spherical Square into a Spherical Lune
Dissection of a Spherical Triangle into a Square
Hinged Dissection of a Spherical Triangle into a Spherical Lune
Dissection of a Spherical Triangle into a Spherical Lune
Dissection of Gerwien's Triangle into a Saccheri Quadrilateral on the Sphere
Orthogonal Projections of the Edges of a Cube
Monge Point of a Tetrahedron
Locus of Points at Constant Distance from the Edges of a Trihedron
Three Planes in a Trihedron
Locus of Centers of Spheres
Inscribed and Circumscribed Spheres of a Tetrahedron
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