#injective $INJ @Injective #Injective $INJ A polygon is a two-dimensional, flat, closed shape made entirely of straight line segments called sides or edges. The points where these sides meet are known as vertices or corners, andddA polygon is a two-dimensional, flat, closed shape made entirely of straight line segments called sides or edges. The points where these sides meet are known as vertices or corners, andA polygon is a two-dimensional, flat, closed shape made entirely of straight line segments called sides or edges. The points where these sides meet are known as vertices or corners, and