Definition, Meaning & Synonyms

interior-angle

noun

/ɪnˈtɪə.ri.ər ˈæŋ.ɡəl/

Definition

An interior angle is the angle formed between two sides of a polygon that meet at a vertex inside the polygon.

Examples

The interior angle of a triangle is always less than 180 degrees.
In a square, each interior angle measures 90 degrees.
Understanding interior angles helps in calculating the properties of geometric shapes.

Meaning

In geometry, an interior angle is an angle formed inside a shape when two sides of the shape extend to a common endpoint, which is one of the vertices of the polygon.