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Quadrilateral -- from Wolfram MathWorld
A quadrilateral, sometimes also known as a tetragon or quadrangle (Johnson 1929, p. 61) is a four-sided polygon. If not explicitly stated, all four polygon vertices are generally taken to lie in a plane. (If the points do not lie in a plane, the quadrilateral is called a skew quadrilateral.) There are three topological types of quadrilaterals (Wenninger 1983, p. 50): convex quadrilaterals ...
Quadrilaterals - Square, Rectangle, Rhombus, Trapezoid ...
Quadrilaterals. Quadrilateral just means "four sides" (quad means four, lateral means side).A Quadrilateral has four-sides, it is 2-dimensional (a flat shape), closed (the lines join up), and has straight sides.
Quadrilaterals, diagonal of the quadrilateral, types of quadrilaterals, parallelogram, rectangle, square, rhombus, trapezium, kite, irregular quadrilateral, angle sum of a quadrilateral and applying properties of quadrilaterals to solve problems.
Quadrilateral | Definition of Quadrilateral by Merriam-Webster
Quadrilateral definition is - a polygon of four sides. How to use quadrilateral in a sentence.
Quadrilateral Shapes - Geometry: Math Games
Learn about quadrilaterals the fun way in this Quadrilateral Shape Shoot Geometry Math Game.
Wesleyan Quadrilateral – The United Methodist Church
John Wesley The founder of the Methodist movement. John Wesley (1703-1791) was born at Epworth, England, the son of a Church of England clergyman.
Quadrilateral Facts - Square, Rectangle, Parallelogram ...
A quadrilateral is a polygon with 4 sides and 4 corners. The word ‘quadrilateral’ comes from ‘quad’ meaning ‘4’ and ‘lateral’ meaning ‘of sides’.
Cyclic quadrilateral - Wikipedia
In Euclidean geometry, a cyclic quadrilateral or inscribed 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.The center of the circle and its radius are called the circumcenter and the circumradius respectively. Other names for these quadrilaterals are concyclic ...
Tangential quadrilateral - Wikipedia
In Euclidean geometry, a tangential quadrilateral (sometimes just tangent quadrilateral) or circumscribed quadrilateral is a convex quadrilateral whose sides are all tangent to a single circle within the quadrilateral. This circle is called the incircle of the quadrilateral or its inscribed circle, its center is the incenter and its radius is called the inradius.
Polygons - Quadrilaterals - First Glance
A quadrilateral is a four-sided polygon with four angles. There are many kinds of quadrilaterals. The five most common types are the parallelogram, the rectangle, the square, the trapezoid, and the rhombus.. Move your mouse cursor over the figures at the right to learn more.