News about Bosnia regularly ignored – go figure

• Nine-sided shape
• A nine-sided polygon
• Drama introduces Harry: touching figure!
• Shape of every Baha'i temple
• Its internal angles total 1,260 degrees
• Nine-sided polygon
• Geometric figure

Wiktionary Word definitions in Wiktionary
n. (context geometry English) A polygon with nine sides and nine angles.

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"plane figure with nine sides," 1680s, a hybrid from Latin nonus "ninth" (see nones ) + ending from pentagon , etc.

Wikipedia Word definitions in Wikipedia
In geometry , a nonagon (or enneagon ) is a nine-sided polygon or 9-gon. The name "nonagon" is a prefix hybrid formation, from Latin ( nonus , "ninth" + gonon ), used equivalently, attested already in the 16th century in French nonogone and in English from ...