The angles of a quadrilateral are `110^@, 72^@, 55^@ and x^@` Find the value of `x^@`

Explanation

Given:
Angles of quadrilateral are:`110^@,\ 72^@,\ 55^@` and `x^@`
By angle sum property of quadrilateral, we state that the sum of all four angles of the quadrilateral is equal to `360^@`.
`therefore110^@\+72^@\+55^@\+x^@=360^@`
`x^@+237^@=360^@`
`x^@=360^@-237^@`
`x^@=123^@`
Hence, the value of the fourth angle is `123^@`.