Quadrilateral, 4 sided polygon, Decagon, 10 sided polygon, Heptagon, 7 sided polygon , Triangle, 3 sided polygon, Pentagon, 5 sided polygon, Octagon, 8 sided polygon , Hexagon, 6 sided polygon , Nonagon, 9 sided polygon , Hendecagon, 11 sided polygon, Dodecagon , 12 sided polygon.

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恢復自動保存: ?