Answer: 36° , 60° and 84°
Step-by-step explanation:
By using Angle Sum Property of a Triangle
3x + 5x + 7x = 180°
15x = 180
x = 180 ÷ 15
∴ x = 12
∴ Now ,
3x = 3 × 12 = 36°
5x = 5 × 12 = 60°
7x = 7 × 12 = 84°
∴ the measurement of each angle is 36° , 60° and 84°.