Sum of Angles in a Triangle Third angle from two. Angle 1 (°) Angle 2 (°) Angle 3 (°) 70 Step-by-step with your numbers: 1. Values used: 2. Angle 1 = 50 ° 3. Angle 2 = 60 ° 4. Angle 3 = 70° Did we solve your problem today? 👍 Yes 👎 No Thanks for the feedback! 180° total. FAQ Right triangle? Then one angle is 90°. Related calculators Triangle Angle Calculator Find the third angle of a triangle. Triangle Inequality Checker Can three sides form a triangle? Pythagorean Theorem Calculator Find the hypotenuse of a right triangle from the two legs.