Are you an EPFL student looking for a semester project?
Work with us on data science and visualisation projects, and deploy your project as an app on top of Graph Search.
A heptagram, septagram, septegram or septogram is a seven-point star drawn with seven straight strokes. The name heptagram combines a numeral prefix, hepta-, with the Greek suffix -gram. The -gram suffix derives from γραμμῆ (grammē) meaning a line. In general, a heptagram is any self-intersecting heptagon (7-sided polygon). There are two regular heptagrams, labeled as {7/2} and {7/3}, with the second number representing the vertex interval step from a regular heptagon, {7/1}. This is the smallest star polygon that can be drawn in two forms, as irreducible fractions. The two heptagrams are sometimes called the heptagram (for {7/2}) and the great heptagram (for {7/3}). The previous one, the regular hexagram {6/2}, is a compound of two triangles. The smallest star polygon is the {5/2} pentagram. The next one is the {8/3} octagram and its related {8/2} star figure (a compound of two squares), followed by the regular enneagram, which also has two forms: {9/2} and {9/4}, as well as one compound of three triangles {9/3}. File:Coat of arms of Georgia (1918–1921; 1990–2004).svg|Former Georgian coat of arms, 1918–1921, 1991–2004 File:Eastern Band Cherokee Flag.svg|Flag of [[Eastern Band Cherokee]] File:Flag of Occitania (with star).svg|The seven-pointed star of the [[Félibrige|Felibritge]] on the [[Occitania|Occitan]] flag. File:Flag of Jordan.svg|The Jordanian flag, bearing the star that symbolizes [[Al-Fatiha]] File:Flag of Hokkaido Prefecture.svg|Symbol of [[Hokkaido]] File:Emblem of Samarkand.svg|Coat of arms of [[Samarkand]] File:Commonwealth_Star.svg|Commonwealth Star as the crest of [[Coat of Arms of Australia]] The seven-pointed star is incorporated into the flags of various bands of Cherokee Indians and the badges of Navajo Nation Police (as well as other police). The Bennington flag, a historical American Flag, has thirteen seven-pointed stars along with the numerals "76" in the canton. The Flag of Jordan contains a seven-pointed star. The Flag of Australia employs five heptagrams and one pentagram to depict the Southern Cross constellation and the Commonwealth Star.