Find the value of the unknown exterior angle x in the following diagrams:

Explanation

(i) Interior angles are `50^@ and 70^@`

Exterior angle = sum of interior opposite angles

`x = 50^@ + 70^@`
`x = 120^@`


(ii) Interior angles are `65^@` and `45^@`

Exterior angle = sum of interior opposite angles

`x = 65^@ + 45^@`
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