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Trapezoids are not considered parallelograms because parallelograms have 2 pairs of parallel sides, whereas trapezoids have only one.
Some definitions of trapezoid say "at least one pair of parallel sides" in which case, some trapezoids would be parallelograms (the ones that have 2 pairs of parallel sides), but most textbooks in the US now define trapezoids as "exactly one pair of parallel sides."
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Earn +20 ptsQ: Why are trapezoids outside the parallelogram?
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How are squares rectangles parallelogram and trapezoids are different?
they are not congruent
are any trapezoids parallelogram?
No because trapezoids have different properties to that of parallelograms but they are both 4 sided quadrilaterals.
Are all parallelogram trapezoids?
No but they are both 4 sided quadrilaterals.
Is it true that some quadrilaterals are neither trapezoids nor parallelogram?
Yes.
Do some trapezoids have two pairs of parallel side's is that true?
Trapezoids have only one pair of parallel sides. A parallelogram has two pair of parallel sides.
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