Relax

Respuesta :

A whole nonagon is 1260° in total.
And since you know 8/9 of the points you can just add & subtract.
So 160 + 120 + 155 + 120 + 125 + 150 + 150 + 125 = 1105
And 1260 - 1105 = 155
So h is 155°.