\angleThe \angle command in LaTeX is used to denote an angle symbol, typically used in geometric contexts to represent the measure of an angle between two lines or line segments.
Represents a right angle at point B between lines AB and BC.
\angle ABC = 90^\circIndicates that the angle DEF is congruent to angle GHI.
\angle DEF = \angle GHISpecifies that the angle represented by the Greek letter theta is 45 degrees.
\angle \theta = 45^\circ