Question

example for angle sum property theorem

Answer 1

Answer:

According to the Angle Sum Property of the triangle, 3x + 4x + 5x = 180°, 12x = 180, x= 15. Thus, the three angles will be: 3x = 3 x 15 = 45°, 4x = 4 x 15 = 60°, 5x = 5 x 15 = 75°.