American Heritage® Dictionary of the English Language, Fourth Edition
- n. A polygon having seven sides.
Century Dictionary and Cyclopedia
- n. In geometry, a closed figure having seven angles successively united by lines.
- n. In fort, a place that has seven bastions for defense.
- n. geometry A polygon with seven sides and seven angles.
GNU Webster's 1913
- n. (Geom.) A plane figure consisting of seven sides and having seven angles.
- n. a seven-sided polygon
- Since 16th century, from Ancient Greek ἑπτάγωνον (heptagonon), from ἑπτά (hepta, "seven") + γωνία (gonia, "angle"). (Wiktionary)
- Latin heptagōnon, from Greek heptagōnos, having seven angles : hepta-, hepta- + -gōnos, angled; see -gon. (American Heritage® Dictionary of the English Language, Fourth Edition)
“It is seven-sided, a heptagon, composed of an infinitely recursive single line.”
“Euclid was able to draw an equilateral triangle, square, pentagon and hexagon, but recall that the heptagon (which has seven sides) and the nonagon (nine) eluded him.”
“The heptagon seven sides, for example, cannot be constructed with a compass and straightedge.”
“If the model proves to be successful, the two countries will extend the agreement to a larger area, gradually, and chose the extended area based on experiences accumulated in exploring and exploiting this heptagon.”
“The 7 coordinates for the corners of the heptagon are”
“Upon which the same disorder, confusion, and error follow, as would if a man, going to demonstrate something of an heptagon, should, in the diagram he took to do it, leave out one of the angles, or by oversight make the figure with one angle more than the name ordinarily imported, or he intended it should when at first he thought of his demonstration.”
“Its basis or groundwork was of most pure and limpid alabaster, and its height somewhat more than three spans, being a regular heptagon on the outside, with its stylobates or footsteps, arulets, cymasults or blunt tops, and Doric undulations about it.”
“Later experience enabled men to judge what was or was not really conducive to virtue, and they rejected both the flute and several other old-fashioned instruments, such as the Lydian harp, the many-stringed lyre, the ‘heptagon,’”
“Here were seven cities, forming the apices of a great heptagon; and at the very center was Festival Field, where drones took place.”
“The side of a regular heptagon is equal to half the side of an equilateral triangle inscribed in the same circle.”
These user-created lists contain the word ‘heptagon’.
words for shape
( randomness, visual. descriptive )
having a certain number of angles
A somewhat discriminatory list of words and phrases collected for their euphonic or arcane appeal, interesting etymology, or concise definition of an otherwise unnamed phenomenon or concept.
a collection of words we study in pre-algebra
Looking for tweets for heptagon.