Question

the angles of the triangle are in the ratio 3:4:5. find the measure of all the angles of the triangle​

Answer 1

Answer:

the sum of all the angle of triangle = 180 degree

So, 3x+4x+5x = 180

12x = 180

x = 180/12

x = 15

hence, the value of x is 12

since, the angle are 3×12 = 36

4×12 = 48

5×12 = 60

Hence, the angle are 36,48,60 .

Answer 2

Explanation:

Let the three angles of triangle be A1 = 3x, A2 = 4x and A3 = 5x.

3x + 4x + 5x = 180°. [Angle Sum Property∆]

12x = 180°

x = 15°

A1 = 3×15 = 45°

A2 = 4×15 = 60°

A3 = 5×15 = 75°