SOLUTION: Angles of a triangle. The second angle of a triangular building lot is three times as the first. The third is 10 degrees more than the sum of the other two angles. Find the meas

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Question 442737: Angles of a triangle. The second angle of a triangular building lot is three times as the first. The third is 10 degrees more than the sum of the other two angles. Find the measure of the third angle.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
a = the 1st angle
The 2nd = 3a
The 3rd = a + 3a + 10 = 4a + 10
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The 3 add to 180 degs
a + 3a + 4a + 10 = 180
You can finish it