Tag Archives: 7

SevenStar

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Two Times Seven Is Fourteen

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Heptagrammic

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Fractiles’ Mandala, Based on Angles of Pi/7 Radians

Although this was based on something I constructed using the Fractiles-7 magnetic tiling toy, I did not have enough magnetic pieces to finish this. The idea was, therefore, converted into a (non-Euclidean) construction using Geometer’s Sketchpad, and then refined using … Continue reading

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Seven Fanciful Designs for Polyhedral Throwing Stars with 7-Fold Dihedral Symmetry

I made these using Stella 4d, a program available at http://www.software3d.com/Stella.php. Any of these images may be enlarged with a click.

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Heptamandala

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Seven Moving Lights in the Sky, the Seven Days of the Week, and Other Significant Sets of Seven

Have you ever wondered why the number seven appears in all the places it does? We have seven days in the week. Churches teach about the seven deadly sins, and “seven heavens” is a common phrase. There are seven wonders … Continue reading

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