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Perpendicular Slope

Slope of a line perpendicular to any given line

Perpendicular Slope Calculator

Original Slope (m)
Perpendicular slope = −1/m. Product of perpendicular slopes = −1.

Two lines are perpendicular if they meet at right angles (90°). The slope of a line perpendicular to a line with slope m is −1/m. This is used in geometry, navigation, and engineering.

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