How does "Max Angle" work when using Tris to Quads? According to Wiki:


  This value (between 0 and 180) controls the threshold for
  this tool to work on adjacent triangles. With a threshold of 0.0, it
  will only join adjacent triangles that form a perfect rectangle (i.e.
  right-angled triangles sharing their hypotenuses). Larger values are
  required for triangles with a shared edge that is small, relative to
  the size of the other edges of the triangles.


However, I don't quite follow that part (even trying my best to), and still puzzling on how it works exactly.

Can anyone explain more about it, for easier understanding?



P.S.: I know what it is for, just can hardly understand how it works from Wiki.
An overly simple answer is that a higher value means it will be more likely to form quads. A lesser value will be less likely to make triangles into quads. If you sculpt something with dynamic topology and then try the tool it will explain itself pretty quickly.