heptagon是什么意思 heptagon的用法 heptagon怎么读
heptagon
英 ['heptəg(ə)n]美 ['hɛptəɡɑn]
n. 七角形；[数] 七边形
中文词源
heptagon 七边形
来自希腊语hepta,七，词源同seven,-gon,边，角，词源同knee,hexagon.
英语词源
heptagon (n.)
1560s, from Middle French heptagon
, from Greek heptagonon, from hepta "seven" (cognate with Latin septem, Gothic sibun, Old English seofon; see seven) + gonia "angle" (see -gon). Related: Heptagonal.权威例句
1. The pagoda has a base of heptagon.
这座宝塔有个七边形的底座。
[ heptagon 造句 ]
