geometry
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geometry [2021/08/12 06:06] piotr |
geometry [2021/09/06 12:42] (current) rapidplatypus [Revolutions] |
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| ==== Icosahedron ==== | ==== Icosahedron ==== | ||
| - | An icosahedron has 20 faces in the shape of congruent equilateral triangles, 30 edges and 12 vertices, and 15 planes of symmetry. By shearing the vertices of the icosahedron, | + | An icosahedron has 20 faces in the shape of congruent equilateral triangles, 30 edges, 12 vertices and 15 planes of symmetry. By shearing the vertices of the icosahedron, |
| - | ==== Everywhere is North ==== | + | ==== Everywhere is north ==== |
| Which direction can we not look while standing at the South Pole? Neither east, nor west, nor south. At the South Pole, every direction is north. [([[https:// | Which direction can we not look while standing at the South Pole? Neither east, nor west, nor south. At the South Pole, every direction is north. [([[https:// | ||
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| ==== Revolutions ==== | ==== Revolutions ==== | ||
| - | The hour hand makes 2 revolutions per day, while the minute hand makes 24 revolutions | + | A clock' |
| ==== Ellipsoid ==== | ==== Ellipsoid ==== | ||
geometry.1628766387.txt.gz · Last modified: 2021/08/12 06:06 by piotr