What is the perimeter of the octagon

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up

Item 1 solve for s. s+24=90 −114 −66 66 114