Calculation of the values of a square (a regular quadrilateral). A square is a quadrilateral with four right angles and four sides of equal length. Enter one of the known values . Then click “Calculate”.
Side length (a)
The radius of the circumscribed circle (R)
Radius of the inscribed circle (r)
d = √2 * a
p = 4 * a
R = a / √2
r = a / 2
All angles are 90°, 2 diagonals.