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Symbols used in Geometry

Directed Line Segment

$\overrightarrow {AB}$

A directed line segment is a line segment endowed with the additional property of direction.

It is often used in the context of applied mathematics to represent a vector quantity.

The $\LaTeX$ code for \(\overrightarrow {AB}\) is \overrightarrow {AB} .

Length of Line Segment

$\overrightarrow {\size {AB} }$, $\size {AB}$

Length is linear measure taken in a particular direction.

Usually, in multi-dimensional figures, the dimension in which the linear measure is greatest is referred to as length.

It is the most widely used term for linear measure, as it is the standard term used when only one dimension is under consideration.

Length is the fundamental notion of Euclidean geometry, never defined but regarded as an intuitive concept at the basis of every geometrical theorem.

The $\LaTeX$ code for \(\overrightarrow {\size {AB} }\) is \overrightarrow {\size {AB} } .

The $\LaTeX$ code for \(\size {AB}\) is \size {AB} .