This hard worksheet asks first graders to think like geometers about both flat and solid shapes. Part A's four multiple-choice questions hunt for the shape with 2 flat faces and 0 vertices (a cylinder), count vertices on a cone, distinguish a rectangle from a square by its 4 right angles with unequal sides, and confirm that cubes and rectangular boxes both have 6 faces. Part B's five fill-in-the-blanks lock down a sphere's 0 vertices and 0 edges, a triangle's 3 straight sides, a cube's 6 square faces, and the meaning of the word 'vertex.' Strong preparation for Grade 2 polygon work.