SOLUTION: Two angles in a triangle measure 20 degrees and 100 degrees. What is the measure of the third?

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Question 391377: Two angles in a triangle measure 20 degrees and 100 degrees. What is the measure of the third?
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi

Note: sum of the angles in a triangle is 180°

 20° + 100° = 120°

   180° -120° = 60°, the measure of the third angle