SEMICIRCLE

Semicircle

In mathematics, a semicircle is a one-dimensional locus of points that forms half of a circle. The full arc of a semicircle always measures 180° . It has only one line of symmetry . In non-technical usage, the term "semicircle" is sometimes used to refer to a half-disk, which is a two-dimensional geometric shape that also includes the diameter segment from one end of the arc to the other as well as all the interior points.

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semicircle

Noun

  1. Half of a circle.
  2. An instrument for measuring angles.


The above text is a snippet from Wiktionary: semicircle
and as such is available under the Creative Commons Attribution/Share-Alike License.

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