Question

If the angle of a triangle are in the 1:4:5,find the angle​

Answer 1

Answer:

let the angles be 1x, 4x and 5x

as sum of angles of a triangle are 180

x+4x+5x=180

    10x    = 180

      x     = 18

therefore angles are x=18°

                                 4x = 18×4=72°

                                5x   = 18×5 = 90°