hendecagram

== English == === Etymology === From hendeca- +‎ -gram. === Noun === hendecagram (plural hendecagrams) A star polygon that has eleven vertices ==== Synonyms ==== undecagram ==== Related terms ==== (star shape): pentagram (5-pointed), hexagram (6-pointed), heptagram (7-pointed), octagram (8-pointed), nonagram (9-pointed), decagram (10-pointed), hendecagram (11-pointed) dodecagram (12-pointed)