# SOLUTION: One angle of a triangle is 20 degrees. The second angle's measurement is four times the third. What is the measure of the third angle?

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 Click here to see ALL problems on Triangles Question 294386: One angle of a triangle is 20 degrees. The second angle's measurement is four times the third. What is the measure of the third angle?Answer by nerdybill(7003)   (Show Source): You can put this solution on YOUR website!One angle of a triangle is 20 degrees. The second angle's measurement is four times the third. What is the measure of the third angle? . Sum of the interior angles of any triangle is 180 degrees. . Let x = measure of third angle and 4x = measure of second angle then 20 + 4x + x = 180 20 + 5x = 180 5x = 160 x = 32 degrees (third angle)