HELP !!!

In a triangle, the second angle is twice the measure of the first, and the third angle is three times the measure of the second. Find the measure of the third angle .
A. 20
B. 30
C. 120
D. 180

It is NOT B.

Question

HELP !!! 

In a triangle, the second angle is twice the measure of the first, and the third angle is three times the measure of the second. Find the measure of the third angle .
A. 20
B. 30
C. 120
D. 180 

It is NOT B.

alekos · Answer

well we know that the sum of the three angles of a triangle add up to 180 degrees right?

anonymous · Answer

Yes

anonymous · Answer

If you work in terms of the first angle, there is 9 x the first angle. There is 180 degrees in a triangle.

180/9=20 degrees.

1st angle = 20 degrees
2nd angle = 2x20=40 degrees
3rd angle = 3x40=120 degrees.

added together, you get 180 degress

alekos · Answer

now if we call the first angle x what would this mean?

alekos · Answer

not a good idea to just give it away