The state or quality of being at equal distance from something or between two or more points.
From Latin 'aequus' (equal) + 'distantia' (distance). The abstract noun form describing the geometric property of equal spacing.
Equidistance is why a perpendicular bisector of a line segment works perfectly for finding equally-spaced locations—every point on it is the same distance from both endpoints, making it fundamental to geometry and surveying.
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