In geometry a quadrilateral is a four-sided polygon, having four edges (sides) and four corners (vertices). The word is derived from the Latin words quadri...

The Golden Quadrilateral (Hindi: स्वर्णिम चतुर्भुज, romanized: Svarnim Chaturbhuj; abbreviated GQ) is a national highway network connecting several major...

Look up quadrilateral or quadrilatéral in Wiktionary, the free dictionary. A quadrilateral, in geometry, is a polygon with 4 sides. Quadrilateral may also...

In Euclidean geometry, a square is a regular quadrilateral, which means that it has four sides of equal length and four equal angles (90-degree angles...

The Quadrilateral Security Dialogue (QSD), commonly known as the Quad, is a strategic security dialogue between Australia, India, Japan and the United...

In Euclidean geometry, a cyclic quadrilateral or inscribed quadrilateral is a quadrilateral whose vertices all lie on a single circle. This circle is...

rhombi or rhombuses) is a quadrilateral whose four sides all have the same length. Another name is equilateral quadrilateral, since equilateral means that...

geometry, a rectangle is a quadrilateral with four right angles. It can also be defined as: an equiangular quadrilateral, since equiangular means that...

The Wesleyan Quadrilateral, or Methodist Quadrilateral, is a methodology for theological reflection that is credited to John Wesley, leader of the Methodist...

geometry, an equidiagonal quadrilateral is a convex quadrilateral whose two diagonals have equal length. Equidiagonal quadrilaterals were important in ancient...