| 单词 | octagon |
| 释义 | octagon (once / 3447 pages) n An octagon is a shape with eight sides. Picture a stop sign, and you'll get the idea. If your house is a strange, roundish shape with eight walls, it's an octagon, and if your medal for being the most improved bowler in your league has a shape with eight equal sides, it's also an octagon. You'll come across the word most often in geometry class, where you'll also learn that an octagon's eight interior angles always add up to 1080 degrees. The Greek root is oktagononos, "eight-angled," from okto, "eight," and gonia, "angle." WORD FAMILYoctagon: octagonal, octagons+/octagonal: octagonally USAGE EXAMPLESWhat version of Rousey enters the Octagon—the merciless wrecking machine of her win streak, or somebody different—is unknown. Wall Street Journal(Dec 29, 2016) McGregor, whose girlfriend is expecting a baby next year, is unlikely to return to the Octagon before May. The Guardian(Dec 15, 2016) During his post-fight interview in the octagon, Pettis said he broke his right hand with his first punch in the first round. Washington Times(Dec 11, 2016) n an eight-sided polygon Hyper polygon, polygonal shape a closed plane figure bounded by straight sides |
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