Calculations in a square (regular tetragon). A square is a quadrilateral with four right angles and four edges of equal length. Enter one value and choose the number of decimal places. Then click Calculate.
d = √2 * a
p = 4 * a
A = a²
rc = a / √2
ri = a / 2
Edge length, diagonal, perimeter and radius have the same unit (e.g. meter), the area has this unit squared (e.g. square meter).
Diagonals and bisecting lines coincide, they intersect with the median lines and with centroid, circumcircle and incircle center in one point. To this, the square is point symmetric and rotationally symmetric at a rotation of 90° or multiples of this. Furthermore, the square is axially symmetric to the diagonals and to the median lines.