- Types:
- show 6 types...
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parallelogram
a quadrilateral whose opposite sides are both parallel and equal in length
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trapezium
a quadrilateral with no parallel sides
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trapezoid
a quadrilateral with two parallel sides
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diamond, rhomb, rhombus
a parallelogram with four equal sides; an oblique-angled equilateral parallelogram
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rhomboid
a parallelogram with adjacent sides of unequal lengths; an oblique-angled parallelogram with only the opposite sides equal
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rectangle
a parallelogram with four right angles
