Tool

Reflection Over y = x

Move a point and reflect it across the diagonal line $y = x$ on a coordinate grid.

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Inputs: Point coordinates x and y anywhere in the visible window.

Outputs: Live coordinates for P and P′, midpoint on y = x, and equal-distance segments to the mirror line.

Used for: Use for coordinate-geometry reflections and understanding the coordinate-swap rule.

geometrytransformationsreflectioncoordinates