This medium worksheet focuses on naming polygons and counting vertices on 3D shapes. Part A fill-in-the-blank teaches that 5 sides makes a pentagon, 6 sides makes a hexagon, an octagon has 8 vertices, a rectangular prism has 8 vertices, a square pyramid has 5 vertices, and a sphere has 0 faces, 0 edges, and 0 vertices. Students also notice a triangle has 3 fewer sides than a hexagon. Part B matches cube, cone, sphere, and square pyramid to their vertex counts. This careful counting practice cements the geometry vocabulary second graders will rely on through elementary school.