Step-by-step explanation:
Let the angle of triangle be x , so each angle will be 1x , 2x , 3x respectively.
We know that sum of all angles in triangle is 180°
So ,
1x + 2x + 3x = 180°
6x = 180°
x = 30°
Therefore , each angle would be 30° , 60° , 90° respectively.
