SOLUTION: in triangle ABC, the ratio of the angles is A:B:C = 2:3:4. what is the measure of the smallest angle? a) 20 b)40 c)60 d)80

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: in triangle ABC, the ratio of the angles is A:B:C = 2:3:4. what is the measure of the smallest angle? a) 20 b)40 c)60 d)80      Log On


   

Question 287928: in triangle ABC, the ratio of the angles is A:B:C = 2:3:4. what is the measure of the smallest angle?
a) 20 b)40 c)60 d)80
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
2N+3N+4N=9N
9N=180
N=180/9
N=20
2*20=40 SMALLEST ANGLE.
3*20=60
4*20=80
PROOF:
40+60+80=180
180=180