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 Related Terms
 Arc:  Part of a circle; the curve between two points on a circle.
Semicircle: Half of a circle.
Arc, Major: If a circle is divided into two unequal parts, the longer arc is called the major arc.
Arc, Minor: If a circle is divided into two unequal parts, the shorter arc is called the minor arc.
Circle: The set of all points in a plane that are the same distance, called the radius, from a given point, called the center.