Angles in Paths

Good day.

Please forgive me if I've knocked at the wrong door.  I am wondering: Is 
there any way to specify a 30-60-90 triangle without considering the 
length of the side which is incommensurable with the other two?  It 
would seem odd to me if a person needed to describe this special 
triangle by first choosing some arbitrary precision with which to 
express the special side.  A path instruction like "turn 135 degrees, 
counter-clockwise" followed by a "move forward 2 units" seems like a 
sequence that a rendering engine could understand and would be better at 
choosing a precision for than a person would be.  (Remember the "Logo 
turtle"?)

Also please forgive me if I've missed something obvious.  I searched 
around for a couple of hours before sending this note.

Thank you for your consideration.
-- 

Shao Miller
Synthetel Corporation
E: [email protected]
W: https://www.synthetel.com