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Perpendicular Lines
Perpendicular Lines
Perpendicular lines are at right-angles to each other, and their equations are inter-linked, where the gradients are negative reciprocals of each other.
If two lines are perpendicular, then they are at right angles to one another.
Perpendicular lines have gradients which together multiply to make . We can also think that each gradient is the negative reciprocal of the other.
Which line below is perpendicular to ?
