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 Related Terms
 Inscribed Polygon:  A polygon is inscribed in a circle if and only if each of its vertices lie on the circle.
Vertex of an Angle: The common endpoint of the two rays that serve as the sides of an angle.
Circle: The set of all points in a plane that are the same distance, called the radius, from a given point, called the center.
Circumcircle: The circle that passes through all the vertices of a polygon.