SOLUTION: Two angles of a triangle measure 21 degrees and 86 degrees. What is the measure of the third angle? Could you please show how you got it. Thank you

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Question 148430: Two angles of a triangle measure 21 degrees and 86 degrees. What is the measure of the third angle?
Could you please show how you got it.
Thank you
Answer by stanbon(57222) About Me  (Show Source):
You can put this solution on YOUR website!
Two angles of a triangle measure 21 degrees and 86 degrees. What is the measure of the third angle?
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The three angles always add up to 180 degrees.
Let the 3rd angle have measure "x".
EQUATION:
x + 21 + 86 = 180
x + 107 = 180
x = 73 degrees
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Cheers,
Stan H.