"nonagon" is commonly used but mixes Latin [novem = 9] with Greek. Modern authors prefer "enneagon".
Most polygons have numerical prefices which are derived from Greek. The exception are quadrilateral and nonagon which use Latin prefices. The Greek prefix for six is hexa.
This is called a nonagon, from the Latin root "nonus" meaning ninth.
From Greek duo "two" + deka "ten" + gonia . You can understand why a hexagon is called a hexagon using the same idea. Hex referring to 6 and gonia again. Now how about a nonagon. Nope, not greek, it comes from the latin word for 9 which is nonus. So it does not always work.
Not a regular nonagon.
The most common term is "nonagon", though technically "non-" is a Latin prefix. The purely Greek word for it is "enneagon." But no one really uses this term , so you're safe with "nonagon."
It is called a nonagon, a horrible mixture of Latin and Greek. For that reason it is (rarely) also called an enneagon
A nine-sided regular polygon is called a nonagon or an enneagon. The word nonagon is a hybrid-word where the prefix non- derives from Latin while the suffix -gon derives from Greek.
The term "nonagon" is derived from Greek. "Nona" means nine, and "gon" refers to a shape with that number of sides.
"nonagon" is commonly used but mixes Latin [novem = 9] with Greek. Modern authors prefer "enneagon".
Greek
A 9-sided polygon is most commonly called a nonagon. Since the names of polygons are derived from the Greek numbers and nonagon is derived from the Latin, the word "enneagon" might be considered to be more correct, but it is rarely used.
Most polygons have numerical prefices which are derived from Greek. The exception are quadrilateral and nonagon which use Latin prefices. The Greek prefix for six is hexa.
A nonagon is a polygon with nine sides. The prefix "nona-" in nonagon comes from the Latin word for "nine." Each side of a nonagon connects to two other sides, forming a total of nine straight sides that enclose the shape.
a nonagon has nine sides and nine angles and nine corners. It comes from the Latin word 'nonus' meaning nine.
In geometry, an enneagon or nonagon is a nine-sided polygon. The name enneagon comes from Greek enneagonon.
Flex a greek or latin