Respuesta :

The sum of all angle in triangle is 180 so:
5x+40+7x+8+10x=180
22x+48=180
22x=132
x=6
Angle B: 70
Angle C: 50
Angle A: 60
The more the measure of an angle is, the longer the front side of an angle is so from shortest to longest:
AB-BC-AC.