Geometry Symbols
Tags: Nomenclature and Symbols
Geometry SymbolsThis is a list of the most common Geometry symbols. | ||
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Symbol | Definition | Example |
\(\triangle\) | triangle | \(\triangle ABC \) |
\(\bigcirc\) | circle | |
\(\odot A\) | circle with center A | |
\(\angle\) | angle | \(\angle ABC = 60^\circ\) |
\(\measuredangle\) | measured angle | \(\measuredangle ABC = 60^\circ\) |
\(\sphericalangle\) | spherical angle | \(\sphericalangle AOC = 60^\circ\) |
\(^\circ\) | degree | 1 circle \(= 360^\circ\) |
' | arcminute | \(1^\circ = 60^\prime\) |
" | arcsecond | \(1'=60^{\prime\prime}\) |
\(r \;or\; rad\) | radiant, \(1 \;rad = 180^\circ /\pi \;\) and \(\;1^\circ = \pi / 180 \;rads\) | \(360^\circ = 2\pi\; rad\) or about \(57.2958^\circ\) |
\(g \;or\; grad\) | gradian, four hundredth (1/400) of a full circle | \( 360^\circ = 400\; grad\) |
\(\overleftrightarrow {AB}\) | infinite line distance | |
\(\overline {AB}\) | line segment from endpoint A to B | |
\(\overrightarrow{AB}\) | start line at point A | |
\(\overset{\frown}{AB}\) | arc with endpoints A and B | |
\(\overset{\frown}{ABC}\) | arc with endpoints A and C | |
m\(\overset{\frown}{AB}\) | measure arc with endpoints A and B | |
\(|A-B|\) | distance between points A and B | \(|A-B| = 9\) |
\(\parallel\) | parallel to | \(\overline {AB} \parallel \overline {XY} \) |
\(\nparallel\) | not parallel to | \(\overline {AB} \nparallel \overline {XY} \) |
\(\perp\) | perpendicular lines | \(\overline {AB} \perp \overline {XY} \) |
\(\sim\) | similarity to | \(\triangle ABC \sim \triangle XYZ\) |
\(\cong\) | congruent, equivalent in size and shape | \(\triangle ABC \cong \triangle XYZ\) |
\(\ncong\) | is not congruent to | \(\triangle ABC \ncong \triangle XYZ\) |
\(\therefore\) | therefore | \( a=b\; \therefore\; b=a \) |
\(\pi\) | \(\pi = 3.141592654... \) | \(C = \pi \cdot d = 2 \cdot \pi \cdot r\) |
Symbol | Definition | Example |
Tags: Nomenclature and Symbols