Square Formulas

Posted In: Mathematics

In geometry, a square is a regular quadrilateral, which means that it has four equal sides and four equal angles (90-degree angles, or (100-gradian angles or right angles).


Side of a square: a
Diagonal: d
Radius of circumscribed circle: R
Radius of inscribed circle: r
Perimeter: L
Area: S

  1. $d=a√2$
  2. $R=d/2={a√2}/2$
  3. $r=a/2$
  4. $L=4a$
  5. $S=a^2$

Post Tags: Geometry

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