Aconstitutional monarchy provides what power to a monarch?

A. Only power given in the constitution
The monarchs in a constitutional monarchy had only the power that was assigned to them in the constitution of their land or country.

Hope this helps :)

Use the formula: (n-2)×180, where n is the number of sides(18-2)×180= 28800, now this is the full exterior angle of 18-gon so you divide it by 18.28800÷18=160