If the angle formed between the intersecting lines are 90o then the two lines are perpendicular.
In 2D coordinate geometry, a perpendicular line has a slope equal to the negative reciprocal of the original line.
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Perpendicular lines are any two lines that intersect at a 90 degree angle.
When two perpendicular lines cross, a right angle is formed.
Non-perpendicular intersecting lines. There is no special name.
Perpendicular: No Parallel: Yes, two pairs.
2 perpendicular lines are called 2 pwrpendicular lines it is sorry <:(