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Number of diagonals. 2. The number of distinct diagonals possible from all vertices. (In general ½n (n–3) ). In the figure above, click on "show diagonals" to see them. See Diagonals of a Polygon. Number of triangles. 2. The number of triangles created by drawing the diagonals from a given vertex.
- Quadrilateral
An inscribed, or cyclic, quadrilateral is one where all the...
- Trapezoid Area
Coordinate Geometry In coordinate geometry, if you know the...
- Polygon Triangles
Regular Polygon case In the case of regular polygons, the...
- Apothem of a Polygon
Apothem given the radius (circumradius) If you know the...
- Exterior Angles
In most geometry textbooks they say flatly that the exterior...
- Perimeter of a Polygon
In the figure above, drag any orange dot to resize the...
- Incircle of a Polygon
The incircle of a regular polygon is the largest circle that...
- Parallel
Shorthand notation. When we write about parallel lines there...
- Quadrilateral
various methods; see below. Internal angle (degrees) 90° (for square and rectangle) 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, a variant of four, and latus, meaning "side".
Nov 5, 2024 · A tetragon is a four-sided polygon, also known as a quadrilateral.
Nov 7, 2024 · 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 ...
The quadrilateral is any 4-sided polygon. But it is the parent of a whole family of figures, each with their own distinct names and characteristics. See also Tetragon. Quadrangle. Quadrangle ("four angles") is another name for a quadrilateral. However, it is a word often used for an open space where people gather, say on a school or university ...
Illustrated definition of Tetragon: Another name for Quadrilateral. Another name for Quadrilateral
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Jul 18, 2023 · The main shapes are square, rectangle, rhombus, kite, parallelogram, and trapezoid. In geometry, a quadrilateral is a two-dimensional closed shape or polygon that has four straight sides, four corners or vertices, and four interior angles. The sum of the interior angles is 360 degrees. The word “quadrilateral” comes from the Latin words ...
