An icosahedron is a regular polyhedron with 20 faces, all of which are equilateral triangles. An icosahedron has 30 edges and 12 vertices. Five equilateral triangles meet at each vertex.
Know MoreAn icosahedron is an example of a Platonic solid, which is a polyhedron that is regular, convex, made of congruent faces of regular polygons, and has the same number of faces meeting at each vertex. Only five known shapes meet this criteria.
The other Platonic solids include the tetrahedron with four triangular faces, the cube, or hexahedron, with six square faces, the octahedron with eight triangular faces and the dodecahedron with twelve pentagonal faces.
Learn more about ShapesA hexagonal prism has eight faces, six of which are rectangles, and two of which are hexagons. A hexagonal prism consists of a top and bottom hexagon that are both joined by straight lines connecting each set of vertices.
Full Answer >A cone has one face, one edge and no corners. A cone is defined as a hollow or solid object with a circular base that tapers upward to a point.
Full Answer >A rectangular prism has six faces. Unlike many other prisms, the faces on a rectangular prism are all rectangles. For instance, a trapezoidal prism has two faces that are trapezoids while the other faces are rectangles.
Full Answer >A square is a two-dimensional shape that does not have a face, but a square is one of the faces of a cube. Faces are associated with solid figures, such as cylinders, cubes and pyramids. Two-dimensional shapes have breadth and width, but they do not have thickness.
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