Surface

Surface

Set of points that form a two-dimensional space.

  • The measure of a surface is called the area.
  • The area of a square is the measure of the surface of the square.

Educational note

The space that can be enclosed by a 2-D shape is not always 2-dimensional, since a 2-D space can be used to enclose a 3-D space (for example, the net of a cylinder is 2-D, but it can enclose a 3-D cylindrical space).

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