A homeowner plans to hang a wallpaper on one wall of a bedroom that is 10-feet long. If a strip of the wallpaper is 20inches wide and strips are hung vertically, how many strips of wallpapers will the homeowner require?

“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 .