improper rotation Directory References Discover Was Martin Luther King, Jr., a Republican or a Democrat? The World’s 5 Most Commonly Used Writing Systems What State Is Washington, D.C. In? 5 Remarkably Close U.S. Presidential Elections Why Is Alcohol Measured by Proof? Why Do We Say “A Pair of Pants”? 6 Classical Dances of India Contents improper rotation crystallography Ask the Chatbot a Question Ask the Chatbot a Question Learn about this topic in these articles:description of symmetry In symmetrySo-called improper rotations are rotations followed by reflections (known as rotoreflections) or rotations followed by inversions (called rotoinversions).Read More