line spiral

A line spiral is a spiral composed of right lines.

We distinguish the following forms:

• rectangular Archimedes' spiral
  
  This spiral is the rectangular form of the Archimedes' spiral.
  The distance between the windings is the same.
  
  
  
  
  
  
  
  
• rectangular equiangular spiral
  Construct line pieces rectangular on each other, where the length is a factor a < 1 smaller than the former.
  
  
  
  
  
  
  
  
• right equiangular spiral
  This curve approximates the equiangular spiral.