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12*(12-3)/2 = 12*9/2 = 54

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14y ago

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How many diagonals does a dodecahedron have?

A dodecahedron is a generic term which describes a 3-dimensional shape with 12 polygonal faces. There are approx 6.4 million topologically different convex dodecahedra plus concave ones. They can have 8 to 20 vertices and 18 to 30 edges. A hexagonal bipyramid has only 9 diagonals whereas a regular dodecahedron has 170 (I think).


Does a dodecahedron have triangular face?

No, the faces of a regular dodecahedron are pentagonal.No, the faces of a regular dodecahedron are pentagonal.No, the faces of a regular dodecahedron are pentagonal.No, the faces of a regular dodecahedron are pentagonal.


How many sides of each face does a dodecahedron have?

A dodecahedron is a 12 side polyhedron. A regular dodecahedron has regular pentagons (5 sides) for each face.


How many faces in a regular dodecahedron?

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How many diagonals does a regular pentagon have?

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How many diagonals does a regular octagon?

8 diagonals


How many diagonals will a regular octagon have?

4 diagonals


How many diagonals in a regular nonagon?

27 diagonals


How many pentagons in a dodecahedron?

A dodecahedron has 12 faces, and each of these faces is a regular pentagon. Therefore, there are a total of 12 pentagons in a dodecahedron.


How many diagonals are in a regular hexagon?

There are 9 diagonals in any hexagon!The hexagon does not have to be regular.


How many diagonals has a regular dodecagon?

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How many regular pentagons are used for dodecahedron?

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