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# Rectangle - choose a jigsaw puzzle to solve

In Euclidean plane geometry, a rectangle is a quadrilateral with four right angles. It can also be defined as an equiangular quadrilateral, since equiangular means that all of its angles are equal (360°/4 = 90°). It can also be defined as a parallelogram containing a right angle. A rectangle with four sides of equal length is a square. The term oblong is occasionally used to refer to a non-square rectangle. A rectangle with vertices ABCD would be denoted as ABCD. The word rectangle comes from the Latin rectangulus, which is a combination of rectus (as an adjective, right, proper) and angulus (angle). A crossed rectangle is a crossed (self-intersecting) quadrilateral which consists of two opposite sides of a rectangle along with the two diagonals. It is a special case of an antiparallelogram, and its angles are not right angles. Other geometries, such as spherical, elliptic, and hyperbolic, have so-called rectangles with opposite sides equal in length and equal angles that are not right angles. Rectangles are involved in many tiling problems, such as tiling the plane by rectangles or tiling a rectangle by polygons.
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fabio andrea la roccia

Added 3 weeks ago by fabio

10

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A card for my mother

82 2

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Name of the puzzle

1

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Interior decor

89

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Colorful puzzle

48

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Colorful puzzle

45

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footboard

27

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Complicated puzzle

42

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For the patient

28

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Flag of Germany

29

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Rectangle

92

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Jigsaw puzzle

74

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For the patient

30

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Colorful puzzle

60

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Jigsaw puzzle

52

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giovanni

66

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clean sheet

17

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matildecilli

27

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ELIF TRUP

Added year ago by ANNA HASHIMOTO

38

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School with class

176

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