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Solid Geometry
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Demonstrations 181 - 200 of 616
Three Tangents to a Sphere
Spherical Cosine Rule for Angles
Construct a Dihedral Angle of a Tetrahedron Given Its Plane Angles at a Vertex
Altitude of a Tetrahedron Given Its Edges
Tiling a Sphere with Special Right Triangles
Tiling with Spherical Triangles of Area Pi
Menelaus' and Ceva's Theorem for Spherical Triangle
Parallelepiped with Edges on Three Skew Lines
Spherical Right Triangles
Spherical Cap and Ring
Intersection of a Plane and a Tetrahedron
Completing a Tetrahedron to a Parallelepiped
Four Theorems on Spherical Triangles
Dissection of a Spherical Equilateral Triangle into Three Isosceles Triangles
Relations between Plane Angles and Solid Angles in a Trihedron
Supplementary Solid Angles for Trihedron
Regular Spherical Polygons
Regular Tetrahedra Formed by Lattice Points Equidistant from the Origin
Fate of the Euler Line and the Nine-Point Circle on the Sphere
Spherical Law of Sines
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