Parallel means 2 sides that never meet... Or thats what I have been told.
What Does Parallel Mean?
Parallel means concurrent and in geometry, it means that two lines are parallel only if they never intersect each other. This means that opposite edge of a ruler and railway lines never meet each other. If two lines AB and DE are parallel then they can be denoted as AB || DE. Moreover, parallel lines form the basis of Euclid's parallel postulate.
It means that if you have an shape the sides go the same way but they don't cross or go far