has one pair
A trapezoid has one pair of parallel sides.
Zero
1 pair
A trapezoid may have zero or one pair of congruent sides.
A trapezoid does not has 2 pairs of parallel lines. A parallelogram does.
Can have no pairs or one pair...
A trapezoid has one pair of parallel sides.
2 pairs
Zero
2
1 pair
One pair.
1
A trapezoid may have zero or one pair of congruent sides.
A trapezoid does not has 2 pairs of parallel lines. A parallelogram does.
One pair
One pair.