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Demonstrations 41 - 60 of 929
Two Equidecomposable Triangles
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
Dissection of a Spherical Triangle into Three Spherical Triangles around a Spherical Hexagon
Four Theorems on Spherical Triangles
Dissection of Three Regular Spherical Pentagons into Five Equilateral 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
Swing-and-Twist Hinged Dissection of One Regular Heptagon into Seven
Regular Spherical Polygons
Gerwien's Simultaneous Dissection of Three Triangles of Same Area
Spherical Law of Sines
Spherical Law of Cosines
Ruffini-Horner Method for Polynomials with Rational Roots
Swing-and-Twist Hinged Dissection of One Regular Heptagon into Eight
Dissection of an Equilateral Spherical Triangle into Two Congruent Equilateral Spherical Triangles
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