The Spiral of Theodorus
The spiral of Theodorus is a spiral constructed from a contiguous sequence of right-angled triangles. Each triangle in the sequence has height 1 and a base constructed from the hypotenuse of the previous triangle. The sequence starts with the unit-length isosceles triangle. It was first constructed by Theodorus of Cyrene and is also called square root spiral, Einstein spiral, or Pythagorean spiral.
For the history of the spiral and more complete list of known properties, see Spiral of Theodorus.
"The Spiral of Theodorus"
Wolfram Demonstrations Project
Published: August 31 2011