A triangular-based pyramid is a convex solid figure with a base in the shape of a triangle and triangular sides that meet at points called vertices, according to New South Wales Board of Studies. Convex means that all it... More »

www.reference.com Math Geometry

A square-based pyramid has five vertices. The vertices are the corner points formed by the intersection of three edges. For a square-based pyramid, there are four vertices at the bottom, and one at the apex. More »

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A square-based pyramid is a pentahedron with a base shaped like a square. This means that the square base has four sides that are all equal. The pyramid has five faces, consisting of its base and four triangles as sides. More »

A dodecahedron is a 12-sided, three-dimensional figure with 20 vertices, 30 edges, 120 diagonals and five sides per face. Each vertex is the meeting point of three edges, and each face is the shape of a regular pentagon. More »

www.reference.com Math Geometry

A pyramid with a hexagon-shaped base has 12 edges, seven faces and seven vertices (points where edges meet). The qualities of a polyhedron are intrinsically related to one another, as is shown using an equation called Eu... More »

The number of sides a pyramid has depends on the shape of its polygonal base; for example, if the base of a pyramid is a square, it will have five sides, which are four triangular sides and one square side. A pyramid who... More »

The centroid of any triangle, right triangles included, is the point where the angle bisectors of all three vertices of a triangle intersect. Given a triangle made from a sufficiently rigid and uniform material, the cent... More »