单词	nonagon
释义	Nonagon A 9-sided polygon (a flat shape with straight sides). (Also called an Enneagon) See: Polygon
随便看	steradian stochastic straight angle straight line subitising subscript subset substitution subtend subtended angle subtract subtraction subtrahend successive sum summary statistics summer superscript supplementary angles surd surface surface area survey symbol symmetry

数学辞典收录了1200条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。