A trapezoid has one pair of parallel sides.
Zero
A trapezoid may have zero or one pair of congruent sides.
1 pair
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
2
Zero
A trapezoid may have zero or one pair of congruent sides.
One pair.
1
1 pair
A trapezoid does not has 2 pairs of parallel lines. A parallelogram does.
One pair
One pair