| NOUN | shape | polygonal shape, polygon | a closed plane figure bounded by straight sides |
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| Meaning | A closed plane figure bounded by straight sides. | |
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| Synonym | polygon | |
| Narrower | concave polygon | A polygon such that there is a straight line that cuts it in four or more points |
| convex polygon | A polygon such that no side extended cuts any other side or vertex | |
| decagon | A polygon with 10 sides and 10 angles | |
| dodecagon | A twelve-sided polygon | |
| heptagon | A seven-sided polygon | |
| hexagon | A six-sided polygon | |
| isogon | An equiangular polygon | |
| nonagon | A nine-sided polygon | |
| octagon | An eight-sided polygon | |
| pentagon | A five-sided polygon | |
| quadrilateral, quadrangle, tetragon | A four-sided polygon | |
| spherical polygon | A figure on the surface of a sphere bounded by arcs of 3 or more great circles | |
| triangle, trigon, trilateral | A three-sided polygon | |
| undecagon | An eleven-sided polygon | |
| Broader | plane figure, two-dimensional figure | A two-dimensional shape |
| Spanish | forma poligonal, polígono | |
| Catalan | forma poligonal, polígon | |
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