The cover features a planar configuration by Leah Berman, associate professor of mathematics at the University of Alaska Fairbanks. There are 240 lines and 240 points arranged so that each line contains 6 of the 240 points and each point sits on 6 of the 240 lines. More images of planar configurations by Leah and Nadine Alise can be found in Mathematical Buffet.
This issue’s interview is with University of Oregon Professor Emerita Marie Vitulli. In this first part of a 2 part interview, we learn about Prof. Vitulli’s field and how she got into mathematics.
Special thanks to Professor Emeritus Thomas Moore for contributing a problem about Pythagorean triples. If you haven’t heard of Pythagorean triples, Prof. Moore gives a brief introduction and more challenges in Pythagorean Triples Challenge.
Angles pervade much of this issue. In Learn By Doing, Addie Summer covers the basic of angle measure. Then, Lightning Factorial follows Emily and Jasmine as they use angles to design a stained glass window. Finally, in this issue’s Math In Your World, I write about one of John and Jane Kostick’s latest creations, which they dub the Quintetra Assembly. To compute the necessary angles needed to create a wood sculpture for this amazing polyhedron, several angles must be computed. In this article, I sketch how to determine these angles and include a net, courtesy of the Kosticks, for Jane’s Quintetra block, 30 of which can be used to build a model of the Quintetra Assembly.
Finally, Anna continues her investigation of x to the x.
We hope you enjoy it!
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