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In this Demonstration, you can create arbitrary patterns inside a dodecagon using three kinds of rhombuses or their corresponding rectangles. Sample logos of the Tokyo 2020 Olympic and Paralympic Games are included.

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Select one of the three kinds of rhombuses and drag it into the dodecagon. Click "set" to make the edges of the rhombus stick to the nearest edges of the existing objects.

To remove a rhombus, drag the "remove" locator onto it and click the "remove" checkbox.

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Contributed by: Yasushi Miki and Izidor Hafner (July 2016)
Open content licensed under CC BY-NC-SA

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References

[1] The Tokyo Organising Committee of the Olympic and Paralympic Games. "Tokyo 2020 Unveils the Emblems of the 2020 Games Inspired by Traditional Japanese Motif." (Jul 1, 2016) tokyo2020.jp/en/news/notice/20160425-01.html.

[2] H. Hamanaka, (blog, in Japanese). (Jul 1, 2016) teijigen.wordpress.com.

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