no it does not
no it does not
Yes, if it is an equiangular or equiangular and equilateral parallelogram (rectangle or square).
100
2
no it does not
no it does not
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.
Ah, isn't that a lovely question? In a parallelogram, there are two pairs of opposite sides that are parallel, but none of the sides are perpendicular to each other. Perpendicular lines meet at a right angle, and in a parallelogram, the sides do not meet at right angles, they run parallel in a harmonious way. Just like nature, everything has its place and purpose in a parallelogram.
They are what makes it a rectangle. The rectangle is a special kind of parallelogram. The perpendicular lines cause it to be called a rectangle.
Yes, if it is an equiangular or equiangular and equilateral parallelogram (rectangle or square).
100
2
The single altitude of a parallelogram is its perpendicular height
None normally
Octagons have no perpendicular lines.
An octahedron has 7 perpendicular lines.