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词汇 decagon
词源

decagon n.

"plane figure having ten sides and angles," 1630s, from Modern Latin decagonum, from Greek dekagonon, from deka "ten" (from PIE root *dekm- "ten") + gōnia "corner, angle" (from PIE root *genu- (1) "knee; angle"). Related: Decagonal.

updated on October 31, 2018

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更新时间:2025/5/1 22:43:11