Pronunciation: [hˈɛptəɡən] (IPA) 
The word "heptagon" refers to a shape with seven sides. It is spelled with the letter "h" at the beginning, followed by "ept" for the seven sides and "agon" for the shape in general. The IPA phonetic transcription for "heptagon" is /ˈhɛptəɡən/. This means that the word is pronounced with a stress on the first syllable, followed by the "t" sound in the second syllable and a soft "g" in the final syllable.
A heptagon is a polygon consisting of seven sides and seven angles. It is a type of two-dimensional geometric shape that is formed by connecting seven straight line segments in a closed loop. The term "heptagon" is derived from the Greek words "hepta," meaning seven, and "gonia," meaning angle.
In a heptagon, each side is connected to the two adjacent sides, creating a total of seven vertices where the lines intersect. The angles of a heptagon add up to 900 degrees, and if all sides and angles are equal, it is called a regular heptagon.
Regular heptagons possess certain symmetrical properties. Each interior angle in a regular heptagon measures approximately 128.6 degrees, while each exterior angle measures around 51.4 degrees. The sum of the interior angles in any heptagon can be calculated using the formula (n-2) × 180°, where n represents the number of sides.
Heptagons are often encountered in various fields such as art, mathematics, geometry, and architecture. They can be seen in the design of buildings, decorative motifs, religious symbols, and even in the formation of crystals. The unique properties and aesthetic appeal of heptagons make them captivating and versatile shapes within the realm of geometric forms.
A figure with seven sides and angles.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "heptagon" comes from the combination of two Greek words: "hepta", meaning "seven", and "gonia", meaning "angle" or "corner". Therefore, the etymology of "heptagon" can be traced back to Ancient Greek.
