Answer: A=45 B=75 C=105
Explanation:
3:5:7=180 degrees
15=180
15 divided by15=180 divided by 15
so, 1=12
so= 3:5:7 equal to (3*12) (5*12) (7*12)
A,B,C angles measures respectively = 36:60:84
if you add them (A,B,C angles) we can obtain = 36:60:84=180
(sum of the measures of the angles of a triangle is 180 degrees)