Octagons

Part of speech: noun

Definitions

1. A geometric figure with eight sides and eight angles that is often noted for its symmetry and uniformity in design
2. A polygon distinguished by its eight edges and vertices, frequently appearing in various architectural and design contexts
3. A shape characterized by eight line segments connecting eight corners, commonly found in tiling patterns and game boards

Etymology: The Greek name for the shape was built from two plain parts: "oktō," meaning eight, and "gōnia," meaning angle or corner. Put together, "oktagōnon" simply meant "eight-cornered" thing, a description that needs no further decoding. The Greeks, and later the Romans, used the term for the eight-sided figure in geometry, and it passed into Latin and then into English as a technical word for a shape rather than an object with a story attached. The same building blocks show up across the Romance languages. French has "octogone," Spanish "octágono," and Italian "ottagono," all cognate with the English form and all drawn from the same Greek compound. The shared pattern is a reminder that many geometric terms were standardised by scholars working in Latin and Greek, so their parts remain visible even when the words have travelled far. The second half of the word, "-gon," is the same element found in "polygon" and "pentagon." Each name simply counts the corners, so an octagon is the eight-cornered member of that family.