quadrilateralˌkwɒd rəˈlæt ər əl
quadrilateral (n)
- plural
- quadrilaterals
English Definitions:
quadrilateral, quadrangle, tetragon (adj)
a four-sided polygon
quadrilateral, four-sided (adj)
having four sides
quadrilateral (Noun)
a polygon having four sides.
quadrilateral (Adjective)
having four sides.
Quadrilateral
In Euclidean plane geometry, a quadrilateral is a polygon with four sides and four vertices or corners. Sometimes, the term quadrangle is used, by analogy with triangle, and sometimes tetragon for consistency with pentagon, hexagon and so on. The origin of the word "quadrilateral" is the two Latin words quadri, a variant of four, and latus, meaning "side." Quadrilaterals are simple or complex, also called crossed. Simple quadrilaterals are either convex or concave. The interior angles of a simple quadrilateral ABCD add up to 360 degrees of arc, that is This is a special case of the n-gon interior angle sum formula × 180°. In a crossed quadrilateral, the four interior angles on either side of the crossing add up to 720°. All convex quadrilaterals tile the plane by repeated rotation around the midpoints of their edges.
Quadrilateral
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". It is also called a tetragon, derived from greek "tetra" meaning "four" and "gon" meaning "corner" or "angle", in analogy to other polygons (e.g. pentagon). Since "gon" means "angle", it is analogously called a quadrangle, or 4-angle. A quadrilateral with vertices A {\displaystyle A} , B {\displaystyle B} , C {\displaystyle C} and D {\displaystyle D} is sometimes denoted as ◻ A B C D {\displaystyle \square ABCD} .Quadrilaterals are either simple (not self-intersecting), or complex (self-intersecting, or crossed). Simple quadrilaterals are either convex or concave. The interior angles of a simple (and planar) quadrilateral ABCD add up to 360 degrees of arc, that is ∠ A + ∠ B + ∠ C + ∠ D = 360 ∘ . {\displaystyle \angle A+\angle B+\angle C+\angle D=360^{\circ }.} This is a special case of the n-gon interior angle sum formula: S = (n − 2) × 180°.All non-self-crossing quadrilaterals tile the plane, by repeated rotation around the midpoints of their edges.
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"quadrilateral." Kamus.net. STANDS4 LLC, 2024. Web. 23 Apr. 2024. <https://www.kamus.net/english/quadrilateral>.
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