Geometry
posted by Chyna on .
If the measures of the angles of a triangle are in the ratio 1:3:5 , what is the measure in degrees of the smallest angle ?
a. 10
b. 20
c. 60
d. 180
thanks , and would be greatly appreciated if answered ASAP .

b.20
because
1:3:5
1+3+5=9
180/9=20
20:60:100