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Taking the ratio x/y of two numbers x and y, also written x÷y. Here, x is called the dividend, y is called the divisor, and x/y is called a quotient. The symbol "/" is called ...

Two slant triangular prisms fused together.

"Brick" is an informal term for a cuboid.

There are several attractive polyhedron compounds consisting of three cubes. The first (left figures) arises by joining three cubes such that each shares two C_2 axes (Holden ...

A cupola adjoined to a rotunda.

A positive-height (outward-pointing) pyramid used in augmentation. The term was introduced by B. Grünbaum.

An enneacontahedron is a 90-faced polyhedron.

A sphere which acts as a model of a spherical (or ellipsoidal) celestial body, especially the Earth, and on which the outlines of continents, oceans, etc. are drawn.

A gyrobicupola is a bicupola in which the bases are in opposite orientations.

A birotunda in which the bases are in opposite orientations.