You can't... A rectangle is defined by 2 sets of parallel lines, ans a parallelogram has 1+ sets of parallel lines
Since a quadrilateral is a defined as any object with two sets of two parallel lines that form four 90 degree right angles. It would have 2 sets of 2 parallel lines.
They are parallel lines
the answer is parallel lines
parallel lines are slanted lines
Because of the way parallel lines are defined. Parallel lines never meet, but to qualify as parallel lines, additional conditions may apply. From Wikipedia: "Two lines in a plane that do not intersect or meet are called parallel lines." Emphasis added.
The slopes will be the same. It is also possible that both parallel lines have no slope defined - if they are vertical.
When the lines of action of all the forces are not parallel to each other is defined as non parallel forces
You can't... A rectangle is defined by 2 sets of parallel lines, ans a parallelogram has 1+ sets of parallel lines
because they never intersect
No, parallel lines never intersect, so they do not have any points in common. Intersecting lines have one common point.
When the lines of action of all the forces are not parallel to each other is defined as non parallel forces
Since a quadrilateral is a defined as any object with two sets of two parallel lines that form four 90 degree right angles. It would have 2 sets of 2 parallel lines.
They are parallel lines
No, parallel lines are defined as always being the same distance away from each other, or having the same slope.
When two lines are parallel, then they do not intersect.
If they were not actually parallel then they would not be parallel lines!