Two objects which are Mirror Images of each other are called enantiomers. The term enantiomer is synonymous with Enantiomorph.
See also Amphichiral Knot, Chiral, Disymmetric, Handedness, Mirror Image, Reflexible
Ball, W. W. R. and Coxeter, H. S. M. ``Polyhedra.'' Ch. 5 in Mathematical Recreations and Essays, 13th ed. New York:
Dover, pp. 130-161, 1987.