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Solid Geometry
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Demonstrations 1  20 of 553
Sum of the Squares of the Sides of a Projected Regular Tetrahedron
New this month
A Shapeshifting Flexible Frame
Op Art Block in ThreePoint Perspective
Three Coplanar Bisectors in Unit Sphere Construction
Op Art with Two Blocks in Perspective
Op Art with Block in Perspective
Three EdgetoEdge 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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