Triangles.
Triangle (tetrahedron, octahedron, icosahedron) Square (cube) Pentagon (dodecahedron)
They are both 3 dimensional shapes with faces that are polygons.
Icosahedron are a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles.
You need to find the area of each of its faces and add them together. An icosahedron may or may not have parallel faces. For example, an icosahedron, in the form of a pyramid with a 19-gon base will have no parallel faces.
Icosahedron are a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles.
Triangle (tetrahedron, octahedron, icosahedron) Square (cube) Pentagon (dodecahedron)
They are both 3 dimensional shapes with faces that are polygons.
The polygons are the equilateral triangle, the square, and the regular pentagon. The faces of these platonic solids are made from the following polygons: tetrahedron - 4 triangles cube - 6 squares octahedron - 8 triangles dodecahedron - 12 pentagons icosahedron - 20 triangles
They are both simply connected 3-dimensional shapes, all of whose faces are polygons.
Equilateral triangles
regular pentagons.... Kyah!
An icosahedron has 20 faces, 30 edges, and 12 vertexes. 5 polygons meet at each vertex and each face has 3 vertexes (therefore made of triangles). A dodecahedron has 12 faces, 30 edges, and 20 vertexes. 3 polygons meet at each vertex and each face has 5 vertexes (therefore made of pentagons).
Icosahedron are a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles.
20 faces
It has 20 faces
Icosahedron are a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles.
There is no simple answer to this question.Polyhedra are named according to the number of faces that they have. An icosahedron is a 3-dimensional shape with 20 faces. It could be in the form of a pyramid with a 19-sided polygon as base. In that case, it has 20 vertices. Or it could be in the form of a prism with 18-sided polygons as base and in that case it has 36 vertices. There are several million different configurations, and the number of vertices varies.The regular icosahedron is a Platonic solid with faces that are equilateral triangles. That has 12 vertices.