# Shape

## Form of an object or its external boundary / From Wikipedia, the free encyclopedia

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A **shape** is a graphical representation of an object's form or its external boundary, outline, or external surface. It is distinct from other object properties, such as color, texture, or material type.
In geometry, *shape* excludes information about the object's location, scale, orientation and reflection.^{[1]}
A * figure* is a representation including both shape and size (as in, e.g., figure of the Earth).

A **plane shape** or **plane figure** is constrained to lie on a *plane*, in contrast to *solid* 3D shapes.
A **two-dimensional shape** or **two-dimensional figure** (also: **2D shape** or **2D figure**) may lie on a more general curved *surface* (a non-Euclidean two-dimensional space).