V Symbol Geometry Symbols – Glossary Of Mathematical Symbols

Common Symbols Used in Geometry

Symbols save time and space when writing. Here are the most common geometrical symbols:

SymbolMeaningExampleIn Words
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Triangle ABC has 3 equal sides Triangle ABC has three equal sides
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Angle
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ABC is 45°

The angle formed by ABC is 45 degrees.
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Perpendicular AB

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CD

The line AB is perpendicular to line CD
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Parallel EF

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GH

The line EF is parallel to line GH
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Degrees 360° 360 degrees (a full rotation!)
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Right Angle (90°)
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is 90°

A right angle is 90 degrees
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Line Segment “AB” AB The line segment between A and B
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Line “AB”
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The infinite line that includes A and B
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Ray “AB”
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The line that starts at A, goes through B and continues on
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Congruent (same shape and size) ABC

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DEF

Triangle ABC is congruent to triangle DEF
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Similar (same shape, different size) DEF

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MNO

Triangle DEF is similar to triangle MNO
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Therefore a=b

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b=a

a equals b, therefore b equals a

See more articles in category: Geometry
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