different between heptagon vs heptagram

English

Etymology

Since 16th century, from Ancient Greek ????????? (heptág?non), from ???? (heptá, “seven”) + ????? (g?nía, “angle”). Equivalent to hepta- +? -gon.

Pronunciation

• (US) enPR: h?p't?g?n, IPA^(key): /?h?p.t?.??n/
• (UK) enPR: h?p't?g?n, IPA^(key): /?h?p.t?.??n/

Noun

heptagon (plural heptagons)

1. (geometry) A polygon with seven sides and seven angles.

Derived terms

• heptagonal
• heptagonally

Synonyms

• septagon (proscribed)

Translations

Anagrams

• pathogen, phone tag

Romanian

Etymology

Borrowed from French heptagone.

Noun

heptagon n (plural heptagoane)

1. heptagon

English

Etymology

From hepta- +? -gram.

Noun

heptagram (plural heptagrams)

1. Either of two regular seven-pointed stars, drawn with the construction lines retained; a heptangle.
   • 1890, Mary Everest Boole, Logic Taught by Love, Alfred Mudge & Son:

     page 15: The exercise may be varied by tracing the Heptagram, i. e., passing from one point to another of a regular Heptagon in this order — 1, 4, 7, 3, 6, 2, 5, 1.

     page 81: If the hand is stiff, it may be loosened and trained into tune with Nature's formative processes by the practice of drawing the Pentagram and Heptagram.

   • 1995, Carl G. Liungman, Thought Signs: The Semiotics of Symbols: Western Idiograms, IOS Press, ?ISBN, page 347:

     It was with the adoption and widespread use of the seven-day week throughout the Hellenistic world of mixed cultures that this heptagram [the weekday heptagram] was created.

   • 2009, John Barnes, Gems of Geometry, Springer, ?ISBN, page 27:

     Note that there are two different heptagrams, one goes around twice and the other thrice; moreover, the configuration at the core of the 3-heptagram is in fact a 2-heptagram and the figure at the core of that is an ordinary heptagon.

2. (rare) A heptagon.

Related terms

• (star shape): hexagram (6-pointed), octogram (8-pointed)

Anagrams

• metagraph