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A cupolarotunda in which the bases are in opposite orientations.

Johnson solid J_(24).

Johnson solid J_(47).

Johnson solid J_(23).

Johnson solid J_(44).

A right-angled parallelepiped with dimensions a×ab×abc, where a, b, and c are integers.

A 100-sided polygon, virtually indistinguishable in appearance from a circle except at very high magnification.

A 70-sided polygon.

A generalization of a solid such as a cube or a sphere to more than three dimensions. A four-dimensional version of a polyhedron is known as a polytope.

When all the points P on one line are related by an isometry to all points P^' on another, the midpoints of the segments PP^' are either distinct and collinear or coincident.