Directions: Fill in the blanks of the missing words to complete the idea of the paragraph. central zipper side wedges А ___ consists of a zipper track, containing two rows of teeth. The zipper is closed when the hooks in the teeth on one side of the zipper are slotted into hollows of teeth on the other side. The zipper slide is a collection of ___. A ___ wedge unlatches the teeth as the zip is undone and the ___ wedges force the teeth together when the zip is done up.
