Enneagram (geometry)
Nine-pointed star polygon / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Enneagram (geometry)?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
This article is about the geometric polygon. For other uses, see Enneagram (disambiguation).
"Nonagram" redirects here. For the puzzle, see Nonogram.
In geometry, an enneagram (🟙 U+1F7D9) is a nine-pointed plane figure. It is sometimes called a nonagram, nonangle, or enneagon.[1]
Quick Facts Edges and vertices, Symmetry group ...
Enneagram | |
---|---|
Edges and vertices | 9 |
Symmetry group | Dihedral (D9) |
Internal angle (degrees) | 100° {9/2} 20° {9/4} |
Close
The word 'enneagram' combines the numeral prefix ennea- with the Greek suffix -gram. The gram suffix derives from γραμμῆ (grammē) meaning a line.[2]