Q:

# What Would Be Included in a List of Three Dimension Shapes?

A:

Some three-dimensional figures are spheres, cones, cylinders, pyramids and prisms. Other three-dimensional figures are octahedra, dodecahedra and icosahedra. Cubes and tetrahedra are some common variants of these major figures.

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A sphere is a solid figure where all points are an equal distance from the center, thus giving the figure a round shape. When cut at its diameter, the half-sphere's base is in the shape of a circle. A cone is a soild with a circular base and a curved side that meets at one vertex. A right cone's vertex is directly over the center of the base, while an oblique cone's vertex is off center. A cylinder is a three-dimensional figure with two parallel circular bases.

A pyramid is a soild with triangular sides that meet at one vertex. One variant of the pyramid is the regular tetrahedron, which is a pyramid consisting of four equilateral triangles. Other variants, such as the square pyramid and hexagonal pyramid, use different polygons as the pyramid's base. A prism is a soild with two identical polygon bases. The shape of the bases give the prism its name, such as a rectangular prism and a triangular prism. A notable variant is the cube, which is a rectangular prism with six congruent faces and all angles measuring 90 degrees.