Respuesta :

Answer:

The sum of interior angle =180

given;

3x +3x +4x =180

    10x = 180

  x =180/10

x =18

so put the value of  x =18  in 3x, 3x and 4x

   = 3x

   =3 ×18

   = 54

   2nd one   = 4 x

                 = 4×18

                  = 72

All three angles are 54,54,72

Step-by-step explanation: