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In geometry, a decahedron is a polyhedron with ten faces. There are 32300 topologically distinct decahedra, [1] [2] and none are regular, so this name does not identify a specific type of polyhedron except for the number of faces. Some decahedra have regular faces: Octagonal prism (uniform 8- prism) Square antiprism (uniform 4- antiprism)
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In geometry, a dodecahedron (from Ancient Greek δωδεκάεδρον (dōdekáedron); from δώδεκα (dṓdeka) 'twelve', and ἕδρα (hédra) 'base, seat, face') or duodecahedron [1] is any polyhedron with twelve flat faces. The most familiar dodecahedron is the regular dodecahedron with regular pentagons as faces, which is a Platonic solid.
May 16, 2024 · A decahedron is a polyhedron having 10 faces. Examples include the 5-trapezohedron, augmented pentagonal prism (Johnson solid), augmented tridiminished icosahedron (), nonagonal pyramid, pentagonal dipyramid (), chamfered tetrahedron, octagonal prism, octagonal dipyramid, square antiprism, and square cupola (), and ten-of-diamonds decahedron.
Illustrated definition of Decahedron: A solid shape with ten flat faces. It is a polyhedron. This 10-sided die is an example of just one type of...
A regular dodecahedron or pentagonal dodecahedron is a dodecahedron that is regular, which is composed of 12 regular pentagonal faces, three meeting at each vertex. It is one of the five Platonic solids. It has 12 faces, 20 vertices, 30 edges, and 160 diagonals (60 face diagonals, 100 space diagonals ). [2] .
- F = 12, E = 30V = 20 (χ = 2)
- {5,3}
- 12 {5}
- Platonic solid
Learn about the decahedron, a solid geometric shape with ten faces, and its different types, properties, and applications. Find out how decahedra are used in architecture, chemistry, mathematics, and jewelry making.
May 21, 2022 · Spheres are perfectly round objects that are found in a 3-dimensional Euclidean space. Technically, they have no thickness and are hollow. The volume described by a sphere is given by. \displaystyle V_ {sphere}= \dfrac {4} {3} \pi r^3. here r is the radius of the sphere. The surface area of a sphere is given by.
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