quadrilateral condition

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• Quadrilateral — This article is about four sided mathematical shapes. For other uses, see Quadrilateral (disambiguation). Quadrilateral Six different types of quadrilaterals Edges and vertices 4 …   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

• Tangential quadrilateral — An example of a tangential quadrilateral In Euclidean geometry, a tangential quadrilateral or circumscribed quadrilateral is a convex quadrilateral whose sides all lie tangent to a single circle inscribed within the quadrilateral. This circle is… …   Wikipedia

• Union of Christendom — • Includes the Catholic Church together with the many other religious communions which have either directly or indirectly, separated from it Catholic Encyclopedia. Kevin Knight. 2006. Union of Christendom     Union of Christend …   Catholic encyclopedia

• Concyclic points — In geometry, a set of points is said to be concyclic (or cocyclic) if they lie on a common circle. Concyclic points, showing that the perpendicular bisectors of pairs are concurrent …   Wikipedia

• Parts of a sail — In sailing the parts of a sail have common terminology for each corner and edge of the sail. Contents 1 Triangular Sails 1.1 The corners 1.2 The edges 1.3 The roach …   Wikipedia

• Trapezoid — For other uses, see Trapezoid (disambiguation) and Trapezium (disambiguation). Trapezoid (AmE) Trapezium (BrE) A Trapezoid Type quadrilateral Edges and …   Wikipedia

• mathematics — /math euh mat iks/, n. 1. (used with a sing. v.) the systematic treatment of magnitude, relationships between figures and forms, and relations between quantities expressed symbolically. 2. (used with a sing. or pl. v.) mathematical procedures,… …   Universalium

• Christianity — /kris chee an i tee/, n., pl. Christianities. 1. the Christian religion, including the Catholic, Protestant, and Eastern Orthodox churches. 2. Christian beliefs or practices; Christian quality or character: Christianity mixed with pagan elements; …   Universalium

• Italy — • In ancient times Italy had several other names: it was called Saturnia, in honour of Saturn; Enotria, wine producing land; Ausonia, land of the Ausonians; Hesperia, land to the west (of Greece); Tyrrhenia, etc. The name Italy, which seems to… …   Catholic encyclopedia

• Anglicanism — Part of a series on the Anglican Communion …   Wikipedia