4
There are four perpendicular lines in a rectangle
A parallelogram has 2 pairs of parallel lines and in the form of a rectangle it has 2 pairs of parallel lines and 4 perpendicular lines that meet at each of its corners at right angles.
At least two pairs: they form the outer rectangle which represents the "universe".
none
It has 2 pairs.
4 pairs
A rectangle has 4 perpendicular lines that meet at right angles.
2
A trapezium has no right angles therefore there are no perpendicular lines. If it had perpendicular lines, it would be a square or rectangle.
Can have no pairs or one pair...
How many pairs of perpendicular sides does this figure have?