the radius of the circle circumscribed around a triangle.

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Universalium. 2010.

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• circumradius — noun For a given geometric shape, the radius of the smallest circle or sphere into which it will fit. The circumradius of the unit square is one half the square root of two …   Wiktionary

• circumradius — | ̷ ̷ ̷ ̷+ noun Etymology: circum + radius : the radius of a circumscribed circle * * * /serr keuhm ray dee euhs/, n., pl. circumradii / dee uy /, circumradiuses. Geom. the radius of the circle circumscribed around a triangle. [CIRCUM + RADIUS] …   Useful english dictionary

• Triangle — This article is about the basic geometric shape. For other uses, see Triangle (disambiguation). Isosceles and Acute Triangle redirect here. For the trapezoid, see Isosceles trapezoid. For The Welcome to Paradox episode, see List of Welcome to… …   Wikipedia

• Platonic solid — In geometry, a Platonic solid is a convex polyhedron that is regular, in the sense of a regular polygon. Specifically, the faces of a Platonic solid are congruent regular polygons, with the same number of faces meeting at each vertex; thus, all… …   Wikipedia

• Cyclic quadrilateral — Cyclic quadrilaterals. In Euclidean geometry, a cyclic quadrilateral is a quadrilateral whose vertices all lie on a single circle. This circle is called the circumcircle or circumscribed circle, and the vertices are said to be concyclic. Other… …   Wikipedia