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A decahedron is a closed 3-D shape with ten polygonal faces. There are 32,300 topologically different decahdra and, since none of these are regular, the term is ambiguous. Some simple decahedra are:
- nonagon-based pyramid
- octagon-based prism
- square antiprism
- pentagonal dipyramid.
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∙ 8y ago
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What is a octa-decahedron?
well judging by the previx octa and the sufix decahedra, i'd say that its a 3-dimensional irregular decahedron that's made up of octagons.
What is a Tecahedron?
If you mean a decahedron then it is a polyhedron with 10 faces
How many verticies are on a pentagonal decahedron?
A dodecahedron has 12 equilateral pentagonal faces. From this, it has 30 edges as well as 20 vertices in its shape.
What is a regular decahedron?
None of the 32,300 topologically distinct decahedra is regular.
Number of faces and edges and vertices of a decahedron?
A decahedron is a polyhedron with 10 faces. There are several versions of a decahedron, but none of these are regular. By definition, they all have 10 faces. There is the octagonal prism - with 24 edges and 16 vertices, the square anti-prism, with 16 edges and 8 vertices, the square cupola, with 20 edges and 12 vertices, the pentagonal bi-pyramid, with 15 edges and 7 vertices and the augmented pentagonal prism, with 19 edges and 11 vertices. See, for example, http://en.wikipedia.org/wiki/Decahedron
How many lines of symmetery Does an a have?
None.
How many lines of symmetery does a circle have?
Infinite lines of symmetry
How many lines of symmetery does a snowman have?
2
How many lines of symmetery does a g have?
None.
How many lines of symmetery does a triangular prism have?
3
How many lines of symmetery on a kite?
It has one line of symmetry
Does a cylinder have lines of symmetery?
Yes.
Does the shape rectangle have lines of symmetery?
Yes.
Which shape has two lines of symmetery?
An ellipse has two lines of symmetry.
How many symmetery lines does irregular heptagon has?
An irregular 7 sided heptagon normally has no lines of symmetry depending how it is constructed.
Can a quadrilateral have more than two lines of symmetery?
Yes.
How many cornets does a decahedron have?
A decahedron has no cornets.
