This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
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ReflectionMatrix

ReflectionMatrix[v]
gives the matrix that represents reflection of points in a mirror normal to the vector v.
  • The reflection is in a mirror that goes through the origin.
  • ReflectionMatrix works in any number of dimensions. In 2D it reflects in a line; in 3D in a plane.
New in 6