Let's look at the geometric characteristics of a square. But first, please review the definition of Perimeter Of Two-Dimensional Shapes, and Angle, and Right Angle.

- A square has some unique features, all sides
are equal in length. For example, if one
**side (S)**is three inches in length, the other three sides are also three inches in length. - Another unique feature of a Square, at the end of each Line Segment the next Line Segment is Perpendicular; this means at the line segment interception, the angles are 90° or Right Angle.
- Special note, the sides of a square must be greater than zero.

**Perimeter Of A Square Formula**

Formula = Side + Side + Side + Side =

Formula = S + S + S + S =

Formula = 4 × S