At least two pairs: they form the outer rectangle which represents the "universe".
Oh, dude, a heptagon has like a bazillion pairs of perpendicular lines... just kidding! It actually has 14 pairs of perpendicular lines. So, like, if you ever need to find perpendicular lines in a heptagon, you've got plenty to choose from.
4
A heptagon can have all 7 lines that are perpendicular to one or both its neighbours.
Yes,I think it has got one
2
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?