Tool
Reflection Over a Horizontal Line
Move a horizontal line and a point to see the reflected point update on a coordinate grid.
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This resource appears in the following posts:
- Reflecting Points Across a Line
February 28, 2026
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Inputs: Reflection line height k plus point coordinates x and y anywhere in the visible window.
Outputs: Live coordinates for P and P′, vertical distance to the line, and a mirrored graph in [-10, 10].
Used for: Use for coordinate-geometry reflection practice and transformation intuition.
geometrytransformationsreflectioncoordinates