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A polygon need not have ANY perpendicular or parallel lines. For example, consider an equilateral triangle.
It can happen that two sides of a polygon, extended if necessary, meet at a point where they form a 90 degree angle. Those two lines are perpendicular.
There may be pairs of lines such that, no matter how far you extend them in either direction, they will never meet. Such lines are parallel.
A triangle cannot have parallel lines but it can have perpendicular lines. Any polygon of 4 or more sides can have sides that are perpendicular or parallel (or some of each).
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What is a polygon with 4 sides no right angles 2 parallel lines top and bottom and 2 lines on the sides that are perpendicular?
TRAPEZOID
Does a rectangle have perpendicular lines and parallel lines?
perpendicular.
Does an equilateral have parallel lines or perpendicular lines?
PERPENDICULAR
Can perpendicular lines be parallel lines?
It is impossible for parallel lines to be perpendicular. Perpendicular lines are intersecting lines, meaning that they cross each other. Parallel lines, on the other hand, are lines that never meet, no matter how far they are extended in either direction. So intersecting lines (which includes perpendicular lines) and parallel lines are exact opposites. Parallel lines will never meet or cross; they cannot be perpendicular.
What is the opposite of perpendicular lines?
Parallel lines
