Question

It is angle measure please help

Answer 1

Opposite angles are equal

`\\ \rm\longmapsto m+357=4m+6`

`\\ \rm\longmapsto 357-6=4m-m`

`\\ \rm\longmapsto 3m=351`

`\\ \rm\longmapsto m=(351)/(3)`

`\\ \rm\longmapsto m=117`