Q: Do all quadrilaterals have at least one pair of parallel sides?

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A trapezoid (or trapezium) has at least one pair of parallel sides.If you asked, "Name all the types of quadrilaterals which have at least one pair of parallel sides?", I would answer: Trapezoid, rhombus, parallelogram, rectangle and square.

A trapezium and a parallelogram are both quadrilaterals with at least one pair of parallel sides.

Trapezoids. All other quadrilaterals either have two pairs of parallel sides or none.

trapezoid

There is no quadrilateral on that list that has only 1 pair of parallel sides.

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No. An example of a quadrilateral that doesn't have a pair of parallel sides is a kite.

A trapezoid (or trapezium) has at least one pair of parallel sides.If you asked, "Name all the types of quadrilaterals which have at least one pair of parallel sides?", I would answer: Trapezoid, rhombus, parallelogram, rectangle and square.

Trapezium

A trapezium and a parallelogram are both quadrilaterals with at least one pair of parallel sides.

A trapezoid has one pair of parallel sides. All other quadrilaterals have no parallel sides or two pairs of parallel sides.

Trapezoids. All other quadrilaterals either have two pairs of parallel sides or none.

trapezoid

No. A trapezoid only has one pair of parallel sides. A chevron has no parallel sides.

There is no quadrilateral on that list that has only 1 pair of parallel sides.

No.

Yes. All of them do, but the trapezoid is the only one with only one pair of parallel sides.

A trapezium or trapezoid (US).