| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024pol•y•gon /ˈpɑliˌgɑn/USA pronunciation n. [countable]- Mathematicsa figure, esp. a closed plane figure, having three or more sides.
po•lyg•o•nal /pəˈlɪgənəl/USA pronunciation adj. WordReference Random House Unabridged Dictionary of American English © 2024pol•y•gon (pol′ē gon′),USA pronunciation n. - Mathematicsa figure, esp. a closed plane figure, having three or more, usually straight, sides. See illus. under heptagon, hexagon, octagon, pentagon, quadrilateral, triangle.
- Greek polýgōnon, noun, nominal use of neuter of polýgōnos many-angled. See poly-, -gon
- Latin polygōnum
- 1560–70;
Collins Concise English Dictionary © HarperCollins Publishers:: polygon /ˈpɒlɪˌɡɒn/ n - a closed plane figure bounded by three or more straight sides that meet in pairs in the same number of vertices, and do not intersect other than at these vertices. The sum of the interior angles is (n–2) × 180° for n sides; the sum of the exterior angles is 360°. A regular polygon has all its sides and angles equal. Specific polygons are named according to the number of sides, such as triangle, pentagon, etc
Etymology: 16th Century: via Latin from Greek polugōnon figure with many anglespolygonal /pəˈlɪɡənəl/ adj poˈlygonally adv |