Constructing a 21-gon using the 14-gon ((21:3) x2 =14) as a base.
This is a general method for constructing 6n+3 polygons.
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| 21-gon construction (neusis) |
The image is a diagram illustrating the geometric construction of a design for a Japanese temari ball. Temari are traditional Japanese folk art thread balls, often featuring intricate geometric patterns.