SOLUTION: if two angles of a triangle measure 40 degrees and 70 degrees, what is the measure of the third angle?

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Question 352197: if two angles of a triangle measure 40 degrees and 70 degrees, what is the measure of the third angle?
Found 2 solutions by Fombitz, nerdybill:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
For every triangle,
A%5B1%5D%2BA%5B2%5D%2BA%5B3%5D=180
40%2B70%2BA%5B3%5D=180
Finish the calculation.

Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
if two angles of a triangle measure 40 degrees and 70 degrees, what is the measure of the third angle?
.
Since the three interior angles of any triangles adds up to 180 we have:
.
Let x = third angle
then
40+70+x = 180
110+x = 180
x = 70 degrees