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In 1985, Branko Grunbaum pointed out that the logo used by the Mathematical Association of America (MAA) was mathematically impossible. The image used was a regular icosahedron shown in the left portion of Fig. 37. The three lines shown are parallel in three dimensions. If rendered by orthogonal projection from 3D to 2D, they will remain parallel. If rendered in perspective, they will all intersect at a single vanishing point. Clearly, this logo is wrong. Mathematics was not used to draw it. The right portion of Fig. 37 shows a correctly drawn regular icosahedron.
Fig. 37 – The left portion shows an
incorrectly drawn regular icosahedron. |
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Mathematically Incorrect Regular Icosahedron
