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A trapezoid (or trapezium, outside of North America) has two parallel sides.

The more common definition is a four-sided figure with exactly one pair of parallel sides. By this definition, figures with two sets of parallel sides such as a rectangle are nottrapezoids.

Some mathematicians use a more general definition that allows for one or more pair of parallel sides. By this definition, a rectangle, square, or rhombus would be considered as special cases of a trapezoid.

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Q: How many parallel line a trapezoid have?

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1 pair of parallel line

A trapezoid has 1 pair of opposite parallel lines of different lengths.

A trapezoid is a quadrilateral with one pair of sides parallel.

Exactly one pair.

A trapezoid has one pair of parallel sides.

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1 pair of parallel lines

1 pair of parallel line

A trapezoid has 1 pair of opposite parallel lines of different lengths.

A trapezoid is a quadrilateral with one pair of sides parallel.

Exactly one pair.

Only one pair is parellel.

A trapezoid has one pair of parallel sides.

An isosceles trapezoid has 1 vertical line of symmetry

The non-parallel line of an isosceles trapezium are equal.

A trapezoid is a quadrilateral with two parallel sides of unequal length. It's like a triangle with the top removed and replaced by a line parallel to the bottom line.

A trapezoid has 1 pair of opposite parallel sides of different lengths

Not always take a trapezoid for example.