quadrilateral

1. A polygon with four sides.

   Meronyms: angle, side; see also Thesaurus:polygon

   Viereck

   четырёхуго́льникčetyrjoxugólʹnik

   чотирику́тникčotyrykútnyk

   a four-sided polygon

2. An area defended by four fortresses supporting each other.

   The Venetian quadrilateral comprised Mantua, Peschiera, Verona, and Legnano.

1. What kind of quadrilateral is it?

   Що це за чотирикутник? — deniko

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2. The area of a quadrilateral cannot be written as a function of its side lengths.

   Площу чотирикутника не можна виразити як функцію довжин його сторін. — deniko

   ruПлощадь четырёхугольника нельзя выразить через длины его сторон. — Ooneykcall

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3. This quadrilateral has two right angles.

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4. A trapezium is a quadrilateral with two parallel sides.

   deEin Trapez ist ein ebenes Viereck mit zwei parallelen Seiten. — Pfirsichbaeumchen

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5. What's the difference between a quadrangle and a quadrilateral?

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