Zero
A trapezoid typically has two parallel sides and two non-parallel sides. Depending on its specific type, such as a right trapezoid, it may have one or two perpendicular sides. In a right trapezoid, one of the non-parallel sides is perpendicular to the parallel sides, resulting in one pair of perpendicular sides.
A trapezoid has one pair of parallel sides.
A trapezoid may have zero or one pair of congruent sides.
None but it has end sides of equal lengths
It has 2 pairs.
It doesn't need any in order to be a trapezoid. It can have a max of two pairs of perpendicular sides.
Can have no pairs or one pair...
Zero
A trapezoid has one pair of parallel sides.
A trapezoid may have zero or one pair of congruent sides.
2 pairs
2
None but it has end sides of equal lengths
Perpendicular would be at a right angle. If your sides are abcd, then ab, bc, cd, and da are perpendicular pairs.
It has 2 pairs.
4 pairs
How many pairs of perpendicular sides does this figure have?