# circumscribe

To circumscribe a regular polygon (such as a triangle, square, pentagon, etc.) or a cyclic quadrilateral, is to enclose it in a circle so that the vertices of the polygon are on the circumference of the circle.

For example, a circumscribed square:

One more example, a circumscribed pentagon.

Title circumscribe Circumscribe 2013-03-22 16:24:32 2013-03-22 16:24:32 PrimeFan (13766) PrimeFan (13766) 11 PrimeFan (13766) Definition msc 51D20 circumscribed circumscription RegularPolygonAndCircles Inscription