Base area (geometry)

The term base designates a specific boundary surface of a three-dimensional body or (mostly limited ) space. In drawings or in three-dimensional models, this surface is always viewed as “below”, that is, as the surface on which the body “stands”. Therefore, the base is mostly flat.

Due to their symmetry, any side surface of the Platonic solids can be regarded as a base.

Examples of base areas in geometry

• The base of a cuboid is a rectangle .
• The base of a pyramid is a polygon .
• The base of a cylinder is a circle or an ellipse .
• The base of a circular cone is a circle .

See also

• Floor space (architecture)
• Prism (geometry)

swell

• Base area . In: Meyers Großes Konversations-Lexikon, Volume 8. Leipzig 1907, p. 453.