4
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
Yes,I think it has got one
Four.
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.
Oh, dude, a rectangle has like, two perpendicular lines. One going up and down, and one going side to side. It's like, the basic geometry you learn in elementary school, man. So, yeah, two perpendicular lines for a rectangle.
2
2
Can have no pairs or one pair...