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By George Hart for the Museum of Mathematics

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The traditional craft of quilting can be used to make many mathematical forms. While quilters have always used geometry to work out repeating patterns, some modern quilters go further in using mathematical objects as the subjects of their quilts. Here are two impressive examples by Sarah Mylchreest and Mark Newbold.

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The above quilt (38″ x 42″) shows the great ditrigonal icosidodecahedron, a nonconvex uniform polyhedron consisting of twenty triangles and twelve pentagons. Although it is perfectly flat, it has a very 3D effect because the pattern includes some shadows.

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This 60″ quilt illustrates a Penrose tiling. It consists of just two shapes of pieces, both isosceles triangles, which join in pairs to make rhombuses. The pattern can be extended infinitely without exactly repeating.

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You can see all of the “Math Monday” columns here.

Gareth Branwyn

Gareth Branwyn

Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor for Boing Boing and WINK Books. And he has a new best-of writing collection and “lazy man’s memoir,” called Borg Like Me.