Given that two angles of a triangle are equal
Let the first and second angle be x
Also given that third angle is greater than each of those angles by 30°
Therefore the third angle is greater than the first and second by 30° = x + 30°
The first and the second angles are equal
We know that sum of all the angles of a triangle = 180°
x + x + x + 30° = 180°
3x + 30 = 180
3x = 180 – 30
3x = 150
x = 150/3
x = 50°
Third angle = x + 30° = 50° + 30° = 80°
The first and the second angle is 50° and the third angle is 80°.