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Polygons
| Term | Definition |
|---|---|
| Polygon | A closed two-dimensional shape with all straight sides |
| Regular Polygon | A two-dimensional shape that has equal sides and equal angles |
| Convex Polygon | A two-dimensional shape that does not have an interior angle greater than 180 degrees. |
| Concave Polygon | A two-dimensional shape that does have an interior angle greater than 180 degrees. |
| Simple Polygon | A two-dimensional shape that only have one boundary and does not cross over itself |
| Complex Polygon | A two-dimensional shape that intersects itself. |
| Irregular Polygon | A two-dimensional shape that does not contain equal sides and equal angles. |
| Triangle | A two-dimensional shape that has three sides. |
| Quadrilateral | A two-dimensional shape that has four sides. |
| Pentagon | A two-dimensional shape that has five sides. |
| Hexagon | A two-dimensional shape that has six sides. |
| Heptagon | A two-dimensional shape that has seven sides. |
| Octagon | A two-dimensional shape that has eight sides. |
| Nonagon | A two-dimensional shape that has nine sides. |
| Decagon | A two-dimensional shape that has ten sides. |
| Dodecagon | A two-dimensional shape that has twelve sides. |