it has 4 lines of symetery :\
None.
= parallel + perpendicular As such no, perpendicular lines do not naturally have parallel lines. However...connect the lines in the symbols below. ++ ++ And you'll have 4 perpendicular lines, and 4 parallel lines.
Perpendicular lines intersect.
PERPENDICULAR
These lines are perpendicular: _|
Lines that aren't perpendicular
perpendicular.
No. The only conditions to quality as a parallelogram is that it is a quadrilateral, and that opposite sides are parallel.
Lines that intersect at 90 degrees are perpendicular lines
A rhombus has parallel lines but no perpendicular lines.
Octagons have no perpendicular lines.