A geometric symbol representing a triangle shape, commonly used to denote delta operators or geometric objects in mathematics.
Examples
Triangle area formula
A = \frac{1}{2}bh, \text{ where } A \text{ is the area of } \triangle ABC
Triangle congruence notation
\triangle ABC \cong \triangle DEF
Angle measure in a triangle
\text{In } \triangle ABC, \text{ the angles sum to } 180°: \angle A + \angle B + \angle C = 180°