Find the angle which is a third its supplement?

Let the angle be x degrees.

The supplement of the angle is 180 - x degrees.

According to the given condition, x = (1/3)(180 - x)

Multiplying both sides by 3, we get:

3x = 180 - x

Adding x to both sides, we get:

4x = 180

Dividing by 4, we get:

x = 45

Therefore, the angle is 45 degrees.

Let the angle be x.

The supplement of the angle = 180 - x

Then, x = (1/3)(180 - x)

=> 3x = 180 - x

=> 4x = 180

=> x = 45

Therefore, the angle is 45 degrees.