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Recreational Mathematics
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Demonstrations 641  660 of 928
A Triangle Inequality Involving the Altitudes, Semiperimeter, Inradius, and Circumradius
Dissecting a Hexagon into Four Smaller Hexagons
The Game of Nim
Mona Lisa and the Golden Rectangle
Problems on Circles VI: Poncelet Transversals
Sections of the 16Cell
Overhanging Cards
Hinged Dissections: From Equilateral Triangle to Square
Equilateral Triangle to Square
Spirals!
Moving the Vertices of the Great Rhombicuboctahedron
NoFourInPlane Problem
Intrinsically Knotted Graphs
The Ulam Prime Spiral
Hecks Boards
Dissecting a Rhombic Dodecahedron into Two Solids
What Color Is the Bear?
Symmetric Compositions of Rhombic Dodecahedra of the Second Kind
The FourRunner Problem
Cumulation
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