Quick answer
A square is a quadrilateral with four equal sides and four right angles.
- Main formula
- Area = s², perimeter = 4s, diagonal = s√2.
- Quick example
- Write the known measurements first, substitute them in the formula and keep the units.
Definition
A square is a quadrilateral with four equal sides and four right angles.
Main properties
- It is also a rectangle and a rhombus.
- Measurements must use the same unit before calculating.
- Draw a quick sketch to identify each value.
Formula
Area = s², perimeter = 4s, diagonal = s√2.
Example method
Read the problem, mark the known measurements, choose the formula and simplify the result step by step.