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| The nonagon and the square root 3 |
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| The nonagon and lines of 1 , 2 and square root 3. The circle in red has a radius of square root 3. |
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| The nonagon and the square root 3 |
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| The nonagon and lines of 1 , 2 and square root 3. The circle in red has a radius of square root 3. |