# What is an interior angle?

A angle formed inside a polygon by two adjacent sides.

### Which of these two regular polygons has the larger interior angle Square Or Pentagon?

Each vertex angle of a polygon is composed of an external angle and an interior angle. These two angles are supplementary (total 180°). As the number of sides of a regular polygon increases then the external angle decreases and conversely, the interior angle increases. The interior angle of a regular pentagon (108°) is larger than the interior angle of a square (90°).

### What is the definition for interior angle?

An interior angle of a 2-dimensional plane shape is an angle on its perimeter that is facing the enclosed area of the shape. An interior angle of a 2-dimensional plane shape is an angle on its perimeter that is facing the enclosed area of the shape. An interior angle of a 2-dimensional plane shape is an angle on its perimeter that is facing the enclosed area of the shape. An interior angle of a 2-dimensional…