A rhombus has four equal-length sides with opposite sides parallel to each other. The perimiter is the sum of the lengths of all sides (a + b + c + d) or, because all sides are the same length, 4 x length of one side (4s).
A(n) __________ is to a parallelogram as a square is to a rectangle.
rhombus |
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quadrilateral |
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trapezoid |
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triangle |