RedCrab Math Tutorial
 

    Points   Distance   Lines   -   Angle   Triangles   Right-Triangles   -  
    Circle   Square   Rectangle   Rhombus   Rhomboid   Trapezoid   -   Sphere   Pyramid  

Rectangle

A rectangle is a simple geometric shape and has the following characteristics
  • It has four sides and four corners
  • All corners are rectangular
  • The opposite sides are parallel and have the same length
  • Both diagonals are the same length

Properties for calculation

  • Length
a a = A / b
  • Width
b b = A / a
  • Area
A A = a · b
  • Perimeter
P P = (2 · a) + (2 · b)
  • Diagonal
d d = √a² + b²
 
Example with the RedCrab Calculator
  • For the calculation, the object s of the class Rectangle is used
 
External References
 
           
  Products RedCrab Calculator RedCRab Manual  
      RedCrab Software - Singapore - Sengkang West Way




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