SOLUTION: working with triangles: 10. If angle s =49 and angle t = 11, then angle r = ______.

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: working with triangles: 10. If angle s =49 and angle t = 11, then angle r = ______.      Log On


   

Question 182901: working with triangles: 10. If angle s =49 and angle t = 11, then angle r = ______.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
working with triangles: 10. If angle s =49 and angle t = 11, then angle r = ______.
-------------
The sum of the angles of ALL (flat) triangles is 180 degs.
s+t = 60, so the 3rd one has to be 120 degrees.