Let us assume the measure of the first angle = x degrees Then Measure of the second angle = 2x Measure of the third angle = 3 * 2x = 6x Now x + 2x + 6x = 180 9x = 180 x = 180/9 = 20 degrees So Measure of the third angle = 6x = 6 * 20 = 120 degrees From the above deduction, it can be concluded that the correct option among all the options that are given in the question is option "C".