Pronunciation: [ˈɛndɪkəɡən] (IPA) 
The word "Endecagon" refers to a polygon with eleven sides. It is pronounced /ɛnˈdɛkəɡɒn/, with emphasis on the second syllable. The "e" at the beginning of the word is pronounced like "en," while "decagon" refers to a ten-sided polygon. Adding "en" to "decagon" signifies the addition of one more side to the shape. Phonetically, each syllable in "Endecagon" is pronounced separately, with stress on the "de" syllable.
Endecagon is a geometric term used to describe a polygon that consists of eleven straight sides and eleven angles. The word "endecagon" is derived from the Latin prefix "endeca," meaning eleven, and the Greek suffix "gon," meaning angle. Thus, an endecagon is a shape that possesses eleven angles.
An endecagon is a specific type of polygon, which is a closed two-dimensional figure with straight sides. It is classified as a many-sided polygon and falls under the category of irregular polygons due to its uneven sides and angles.
Each side of an endecagon is of equal length, resulting in an equilateral polygon. However, since there are 11 sides, the angles of an endecagon are not all identical. The sum of the interior angles of an endecagon is always equal to 1620 degrees, with each angle measuring approximately 147.27 degrees.
Endecagons are a rare occurrence in everyday life and are mostly utilized in mathematical and geometric studies. They can be found in various mathematical models, architectural designs, and artistic representations. Moreover, endecagons are often used in advanced calculations and are fundamental in trigonometry, calculus, and algebraic equations.
In summary, an endecagon is an eleven-sided polygon characterized by straight sides, eleven angles, and equal side lengths. It is a geometric shape widely studied in mathematics and employed in various fields for analytical purposes.
A plain figure having eleven sides and eleven angles.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "endecagon" is derived from the combination of two Greek words. "Endeka" means "eleven" in Greek, while "gonia" means "angle" or "corner". So, "endecagon" literally means "eleven angles" or "eleven corners", referring to a polygon with eleven sides.
