AskDefine | Define rectangular

Dictionary Definition

rectangular adj
1 having four right angles; "a rectangular figure twice as long as it is wide"
2 having a set of mutually perpendicular axes; meeting at right angles; "wind and sea may displace the ship's center of gravity along three orthogonal axes"; "a rectangular Cartesian coordinate system" [syn: orthogonal]

User Contributed Dictionary

English

Adjective

rectangular
  1. Having a shape like a rectangle.

Translations

Extensive Definition

In geometry, a rectangle is defined as a quadrilateral where all four of its angles are right angles. A rectangle with vertices ABCD would be denoted as rectanglenotation ABCD.
From this definition, it follows that a rectangle has two pairs of parallel sides; that is, a rectangle is a parallelogram. A square is a special kind of rectangle where all four sides have equal length; that is, a square is both a rectangle and a rhombus. A rectangle that is not a square is colloquially known as an oblong.
Normally, of the two opposite pairs of sides in a rectangle, the length of the longer side is called the length of the rectangle, and the length of the shorter side is called the width.
The area of a rectangle is the product of its length and its width; in symbols, A=lw. For example, the area of a rectangle with a length of 5 and a width of 4 would be 20, because 5 \times 4 = 20.
In a rectangle the diagonals cross each other at their respective midpoints, under the same argument as for parallelograms. Unlike general parallelograms the two diagonals of a rectangle have the same length, the length of the diagonal can be found using the Pythagorean theorem.
In calculus, the Riemann integral can be thought of as a limit of sums of the areas of arbitrarily thin rectangles.
rectangular in Asturian: Rectángulu
rectangular in Aymara: Wiskhalla
rectangular in Bengali: আয়তক্ষেত্র
rectangular in Bosnian: Pravougaonik
rectangular in Breton: Skouergorneg
rectangular in Bulgarian: Правоъгълник
rectangular in Catalan: Rectangle
rectangular in Czech: Obdélník
rectangular in Danish: Rektangel
rectangular in German: Rechteck
rectangular in Estonian: Ristkülik
rectangular in Modern Greek (1453-): Ορθογώνιο παραλληλόγραμμο
rectangular in Spanish: Rectángulo
rectangular in Esperanto: Ortangulo
rectangular in Basque: Laukizuzen
rectangular in Persian: مستطیل
rectangular in French: Rectangle
rectangular in Korean: 직사각형
rectangular in Hindi: आयत
rectangular in Indonesian: Persegi panjang
rectangular in Icelandic: Rétthyrningur
rectangular in Italian: Rettangolo
rectangular in Hebrew: מלבן
rectangular in Georgian: მართკუთხედი
rectangular in Swahili (macrolanguage): Mstatili
rectangular in Haitian: Rektang
rectangular in Lao: ຮູບສີ່ແຈສາກ
rectangular in Latvian: Taisnstūris
rectangular in Lithuanian: Stačiakampis
rectangular in Limburgan: Rechhook
rectangular in Hungarian: Téglalap
rectangular in Dutch: Rechthoek
rectangular in Japanese: 長方形
rectangular in Norwegian: Rektangel
rectangular in Norwegian Nynorsk: Rektangel
rectangular in Central Khmer: ចតុកោណកែង
rectangular in Polish: Prostokąt
rectangular in Portuguese: Rectângulo
rectangular in Romanian: Dreptunghi
rectangular in Quechua: Wask'a
rectangular in Russian: Прямоугольник
rectangular in Sicilian: Rittànculu
rectangular in Simple English: Rectangle
rectangular in Slovak: Obdĺžnik
rectangular in Slovenian: Pravokotnik
rectangular in Serbian: Правоугаоник
rectangular in Finnish: Suorakulmio
rectangular in Swedish: Rektangel
rectangular in Tagalog: Parihaba
rectangular in Tamil: செவ்வகம்
rectangular in Thai: รูปสี่เหลี่ยมผืนผ้า
rectangular in Vietnamese: Hình chữ nhật
rectangular in Turkish: Dikdörtgen
rectangular in Ukrainian: Прямокутник
rectangular in Vlaams: Rechtoek
rectangular in Chinese: 矩形

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