RedCrab Math Tutorial
 




Rectangle Calculation

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

Rectangle Properties

  • 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
 
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Points, Distance and Midpoint
Distance Between Two Points
Lines and Gradiants
Angle Definition and Relationships
Lines and Segments of Triangles
Right-Triangles and Pythagorean
Circle
Square
Rectangle
Rhombus
Rhomboid
Trapezoid

Cone
Pyramid
Sphere
Spherical Segments and Sectors
 
   



           
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