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Geometry
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Demonstrations 2421  2440 of 2957
Two Proofs of the Equality of the Volumes of a Box and a Parallelepiped
Covering the Plane with Polygons
Simson's Theorem
Johnson's Theorem
FiveSquarestoOne Dissection
Dissection of a Truncated Octahedron into Hexagonal Skew Prisms and Parallelepipeds
Dissection of Two Rhombic Solids into an Icosidodecahedron and a RhombIcosiDodecahedron
Dissection of an Oblique into a Right Prism
Taking Apart a Cube
Equidecomposition of a Rhombohedron, Hexagonal Prism, and a Rhombic Dodecahedron
Tiling Space with a SchmittConway Biprism
Dissection of a Rhombohedron into a Right Prism with the Same Base
The Perpendicular Bisector of a Chord
Stengel's Theorem
Pedal Triangles of Isogonal Conjugates
Dissection of a Pentagonal Antiprism into a Metabidiminished Icosahedron
Hinged and Translational Dissection of Two Squares to One
Circular Coverings
The Carpets Theorem
The Midpoint Quadrilateral Theorem
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