弘扬中华文化·传承国学经典

nonagon是什么意思

nonagon

英 ['nɒnəg(ə)n] 美 ['nɑnəɡɑn]

n. [数] 九边形

英文词源

nonagon (n.): "plane figure with nine sides," 1680s, a hybrid from Latin nonus "ninth" (see nones) + ending from pentagon, etc.