Antidéplacement

In Geometry, a antidéplacement is a Isométrie which preserves the distances and which reverses the orientation: in dimension $2\; \backslash ,$ antidéplacement reverses the Angle S directed.

Examples

• In dimension $2\; \backslash ,$, orthogonal symmetries compared to a line are antidéplacements.
• In dimension $3\; \backslash ,$, symmetries compared to a point are antidéplacements.
• In dimenson $n\; \backslash ,$, orthogonal symmetries compared to a hyperplane are antidéplacements,

and symmetries compared to a point are antidéplacements if $n\; \backslash ,$ is odd .

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