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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".
In geometry, a polygon is traditionally a plane figure that is bounded by a finite chain of straight line segments closing in a loop to form a closed chain. These segments are called its edges or sides, and the points where two of the edges meet are the polygon's vertices (singular: vertex) or corners.
Megagon - 1,000,000 sides; Star polygon – there are multiple types of stars Pentagram - star polygon with 5 sides; Hexagram – star polygon with 6 sides Star of David (example) Heptagram – star polygon with 7 sides; Octagram – star polygon with 8 sides Star of Lakshmi (example) Enneagram - star polygon with 9 sides; Decagram - star ...
In general, any quadrilateral with perpendicular diagonals, one of which is a line of symmetry, is a kite. Every rhombus is a kite, and any quadrilateral that is both a kite and parallelogram is a rhombus. A rhombus is a tangential quadrilateral. [10] That is, it has an inscribed circle that is tangent to all four sides. A rhombus.
I-shape, the shape that resembles the capital letter Ɪ in a serif font, i.e., with horizontal strokes Ɪ-beam, a beam with an Ɪ-shaped section; The court in the Mesoamerican ballgame is I-shaped; J-shape, the shape that resembles the capital letter J; K-shape, the shape that resembles the capital letter K. K-shaped recession; K turn; L ...
Squares can be defined in many equivalent ways. If a quadrilateral (a four-sided polygon in the Euclidean plane) satisfies any one of the following definitions, it satisfies all of them: A square is a rectangle with four equal sides. [1] A square is a rhombus with a right angle between a pair of adjacent sides. [1]
A formula for the area K of a cyclic orthodiagonal quadrilateral in terms of the four sides is obtained directly when combining Ptolemy's theorem and the formula for the area of an orthodiagonal quadrilateral. The result is [11]: p.222 = (+).
4-sided dice. The Royal Game of Ur, dating from 2600 BC, was played with a set of tetrahedral dice. Especially in roleplaying, this solid is known as a 4-sided die, one of the more common polyhedral dice, with the number rolled appearing around the bottom or on the top vertex.