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e. A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre. The distance between any point of the circle and the centre is called the radius. The length of a line segment connecting two points on the circle and passing through the centre is called the diameter.
Anarchists have employed certain symbols for their cause since the 19th century, including most prominently the circle-A and the black flag. [1] [2] Anarchist cultural symbols have become more prevalent in popular culture since around the turn of the 21st century, concurrent with the anti-globalization movement and with the punk subculture. [3] [4]
Circle symbol may refer to (in ascending order of size, approximately): ˚, ring diacritic. , white bullet. ∘, function composition. °, degree symbol. º, masculine ordinal indicator. o, music symbol denoting either a diminished triad or diminished seventh chord. o, superscript lowercase letter o. , white circle Unicode symbol.
The "∅" symbol is always drawn as a slashed circle, whereas in most typefaces the letter "Ø" is a slashed ellipse. The diameter symbol ( ⌀ ) (Unicode character U+2300) is similar to the lowercase letter ø, and in some typefaces it even uses the same glyph , although in many others the glyphs are subtly distinguishable (normally, the ...
Peace symbol. The symbol now known internationally as the "peace symbol" or "peace sign", was created in 1958 as a symbol for Britain's campaign for nuclear disarmament. [53] It went on to be widely adopted in the American anti-war movement in the 1960s and was re-interpreted as generically representing world peace.
Taijitu. In Chinese philosophy, a taijitu (Chinese: 太極圖; pinyin: tàijítú; Wade–Giles: tʻai⁴chi²tʻu²) is a symbol or diagram (圖; tú) representing taiji (太極; tàijí; 'utmost extreme') in both its monist (wuji) and its dualist (yin and yang) forms in application is a deductive and inductive theoretical model. Such a ...
The circled dot, circumpunct, or circle with a point at its centre may refer to one or more of these glyphs or articles. This article contains uncommon Unicode characters. Without proper rendering support, you may see question marks, boxes, or other symbols instead of the intended characters.
The symbol used by mathematicians to represent the ratio of a circle's circumference to its diameter is the lowercase Greek letter π, sometimes spelled out as pi. [8] In English, π is pronounced as "pie" ( / p aɪ / PY ). [ 9 ]