Question

In a triangle, the measure of the second angle is twice the measure of the first angle. The third angle is equal to the sum of the other angles.

Which of the following answers could represent the measures of the three angles?

A) x, 2x, 4x
B) x, 2x, 3x
C) x, 2x, 2x

Answer 1

The answer would be x,2x,3x because x is the first angle, the second angle is two times the amount (2x) and the third angle is the sum of the other two angles (x + 2x = 3x).

Hope this helps.

Answer 2

x, 2x, and (x+2x)=3x

6x=180

x=30

30, 60, 90 triangle.