Sections of polyhedra
Sections of polyhedra
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Poincaré disk
The Poincaré disk: a model for hyperbolic geometry.
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Spirograph
A digital spirograph
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Point… hypercube
Point, segment, square, cube, … how does the sequence continue?
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Wallpaper patterns
Choose the symmetry group and draw a mosaic!
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Nets of a cube
The 11 nets of a cube.
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Earth
Moving on the surface of a globe.
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Multiplications
Multiplications are changes in units of measurement
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The volume of the sphere
The volume of the sphere is the difference between the volume of the circumscribed cylinder and a double cone inscribed in the cylinder.
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