An ice hockey rink is in the shape of a rectangle, but with rounded comers. The rectangle is 200 feet long and 85 feet wide. Ignoring the corner rounding, what is the distance around a hockey rink?
A.570 ft
B.285 ft
C.485 ft
D.370 ft

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .