quadrilatéral
71Kite (geometry) — Kite A kite showing its equal sides and its inscribed circle. Type Quadrilateral Edges and vertices 4 Symmetry group D1 (*) In Euclid …
72Lambeth-Viereck — Das Lambeth Quadrilateral (Quadrilateral ist englisch für „Viereck“) bezeichnet vier Prinzipien, die von der Lambeth Konferenz (1888) als Grundbedingungen der kirchlichen Einheit betrachtet wurden. Diese waren: das Alte Testament und das Neue… …
73Brahmagupta's formula — In geometry, Brahmagupta s formula finds the area of any quadrilateral given the lengths of the sides and some of their angles. In its most common form, it yields the area of quadrilaterals that can be inscribed in a circle. Basic form In its… …
74Brahmagupta — (audio|Brahmagupta pronounced.ogg|listen) (598–668) was an Indian mathematician and astronomer. Life and work Brahmagupta was born in 598 CE in Bhinmal city in the state of Rajasthan of northwest India. He likely lived most of his life in… …
75Rhombus — For other uses, see Rhombus (disambiguation). Rhombus Two rhombi Type quadrilateral, bipyramid Edges and vertices …
76Ptolemy's theorem — In mathematics, Ptolemy s theorem is a relation in Euclidean geometry between the four sides and two diagonals or chords of a cyclic quadrilateral. The theorem is named after the Greek astronomer and mathematician Ptolemy (Claudius Ptolemaeus).If …
77Complete quadrangle — A complete quadrangle (at left) and a complete quadrilateral (at right). In mathematics, specifically projective geometry, a complete quadrangle is a system of geometric objects consisting of any four points in the Euclidean plane, no three of… …
78Genus–differentia definition — Part of a series on Aristotelianism …
79Contraposition — For contraposition in the field of traditional logic, see Contraposition (traditional logic). For contraposition in the field of symbolic logic, see Transposition (logic). Contraposition is a logical relationship between two propositions, or… …
80Anglicanism — Part of a series on the Anglican Communion …
