An angle is equal to its supplement. Determine its measure.

Explanation

Let the supplement of the angle be `x^@`
According the given statement, the required angle is equal to its supplement, therefore, the required angle becomes `x^@`.
Since both the angles are supplementary, therefore, their sum must be equal to `180^@`
Or we can say that:
`x + x = 180^@`
`2x = 180^@`
`x=180/2`
`x = 90^@`
Hence, the required angle measures `90@`
`x = 90^@`
Hence, the required angle measures `90^@`.