Represents a reflection in the hyperplane through the origin perpendicular to a
ReflectionTransform[v]
ReflectionTransform[v, p]
ReflectionTransform[{1, 0}]
→ TransformationFunction[{{-1, 0, 0}, {0, 1, 0}, {0, 0, 1}}]ReflectionTransform[{1, 0}, {2, 3}]
→ TransformationFunction[{{-1, 0, 4}, {0, 1, 0}, {0, 0, 1}}]ReflectionTransform[{0, 1}][{4, 5}]
→ {4, -5}