1650s, from Latin octagonos, from Greek oktagononos, literally "eight-angled," from okta- comb. form of okto "eight" (see eight) + gonia "angle," related to gony "knee" (see -gon). Also octogon (1650s), from French octogone.
实用例句
1. Various windows embellish the corridor, with the shape of square, circle, hexagon and octagon.
走廊的窗户形状各异，有方形，有圆形，有六角形，也有八角形。来自辞典例句
2. Eight . A circle has 1 line , and an octagon has 8.
如果圈代表一个,八角形是多少?来自互联网
3. The design of octagon vase is tall and simple; the glaze color is green and clear.
