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|Bowers style acronym||Traz|
|Measures (edge length 1)|
|Symmetry||I×I, order 1|
The trapezoid, or traz, is a quadrilateral with one pair of opposite parallel sides. It is a specific case of an irregular tetragon. All trapezoids are convex in Euclidean geometry.
Types of trapezoids[edit | edit source]
If the two non-parallel sides of a trapezoid intersect, the figure may more specifically be called a crossed trapezoid. If the two non-parallel sides have the same length, the figure may be called an isosceles trapezoid.
An isosceles trapezoid with edge length ratios 2:1:1:1 is called a triamond, constructible as a blend of three equilateral triangles. Polyhedra containing triamonds have been studied, particularly the set of convex triamond polyhedra.
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