Rectangle Formulas

Posted In: Mathematics

In Euclidean plane geometry, a rectangle is a quadrilateral with four right angles. It can also be defined as an equiangular quadrilateral, since equiangular means that all of its angles are equal (360°/4 = 90°).


Sides of a rectangle: a,b
Diagonal: d
Radius of circumscribed circle: R
Perimeter: L
Area: A

  1. $d=√{a^2+b^2}$
  2. $R=d/2$
  3. $L=2(a+b)$
  4. $S=ab$

Post Tags: Geometry

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