do.dec.a.gonn.(名词)A polygon with 2 sides.十二边形来源:Greek dôdekagônon 希腊语 dôdekagônon dôdeka [twelve] duo [two] * see dwo- deka [ten] * see dekô dôdeka [十二] duo [二] *参见 dwo- deka [十] *参见 dekô -gônon [-gon] -gônon […角形] 【引伸】do.decag.onal