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MAA Writing Awards
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Triquetras and Porisms
Award: George Pólya
Year of Award: 1993
Publication Information: The College Mathematics Journal, Vol. 23, No. 2, (1992), pp. 118-131
Summary: Theorems involving the mathematics of triquetras; three equal interlaced arcs.
About the Author: (from The College Mathematics Journal, Vol. 23, No. 2, (1992)) Dana N. Mackenzie graduated from Swarthmore College with highest honors in 1979 and received his Ph.D. from Princeton University in 1983, under his former name, Dana Nance. He taught for six years at Duke University, and since 1989 has been an Assistant Professor of Mathematics at Kenyon College. His specialty is minimal surfaces; for example, he and Gary Lawlor completely solved the problem of determining when two intersecting n-planes minimize area (the Angle Criterion). He was the North Carolina chess champion in 1985 and 1987.