**Rotating shape** is a geometric figure formed by the rotation of a planar shape around an axis (line) within the plane of the shape.

Some well-known rotational bodies include:

- Sphere - formed by the rotation of a circle or semicircle around its diameter.
- Cone - formed by the rotation of a right-angled triangle around one of its legs.
- Cylinder - formed by the rotation of a rectangle or square around one of its sides.