Question

Find the value of x.

Answer 1

`x + 1 + x + 3 = 180`

by vertically opposite angle theorem

`x + x + 1 + 3 = 180`

`2x + 4 = 180`

`2x = 180 - 4 = 176`

`x = (176)/(2)`

`x = 88`

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