Decagon is a 7 letter English word. It's valid Scrabble word worth 11 points. It's valid Words with friends word worth 14 points.
You can make 199 anagrams from letters in decagon (acdegno).
From the Medieval Latin word decagōnum, dating back to 1565-75. See deca-, -gon
Below the arches are the chapels which surround the decagon in symmetrical fashion.
The plan of the church was a decagon, within which six composite columns in the centre supported six semi-circular vaults.
In the fourth are six triangles, in the fifth, five polygons from a pentagon to a decagon.
decagon, dek′a-gon, n. a plane figure of ten angles and sides.