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In geometry, a hendecagram (also endecagram or endekagram) is a star polygon that has eleven vertices. The name hendecagram combine a numeral prefix, ''hendeca-'', with the Greek suffix ''-gram''. The ''-gram'' suffix derives from ''γραμμῆς'' (''grammēs'') meaning a line.〔(γραμμή ), Henry George Liddell, Robert Scott, ''A Greek-English Lexicon'', on Perseus〕 == Regular henagrams== There are 4 regular hendecagrams,〔.〕 which can be described by the notation , , , and ; in this notation, the number after the slash indicates the number of steps between pairs of points that are connected by edges. These same four forms can also be considered as stellations of a regular hendecagon.〔.〕 |120px |120px |} 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「hendecagram」の詳細全文を読む スポンサード リンク
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