The measure of one angle of a triangle is twice the measure of another, and the third angle is 1/3 of the sum of the measures of the other 2. Find the measures of all three angles. Ans: Let the first angle be x Then the second angle is x/2 Third angle = 1/3 the sum of the other 2 = 1/3*(x + x/2) = 1/3 * (3*x/2) = x/2 We know that the sum of the 3 angles in a triangle is 180 SoSo one angle is 90 The second is 90/2 = 45 Third = (90+45)/3 = 45 Hope you got it :)