| All four sides and angles are congruent. | |
| | All three sides and angles are congruent. | |
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| A regular nonagon with all diagonals present | |
| | A regular dodecagon with all its diagonals | |
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| The arc length is a fraction of the circumference. | |
| | Each angle is equal to 120 degrees; all sides are congruent. | |
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| Regular polygons are equilateral and equiangular. | |
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