Which of the following represents a line of symmetry for the octagon shown?

On a architect's drawing of a house, 1 inche representa 1.5

You have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint? you have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint?

Math it's appreciated. (picture provided)