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Overview
Mathematical Reasoning
Geometry Plus
8. Three-Dimensional Geometry
8.1 3D shapes
Basic 3D Shapes
Explore basic 3D shapes such as cubes, spheres, cones, cylinders, and pyramids, and learn to recognize their faces, edges, and vertices.
What You'll Learn
Identify common 3D shapes such as cubes, rectangular prisms, spheres, cones, cylinders, and pyramids
Recognize a face as a flat or curved surface, an edge as where two faces meet, and a vertex as a corner point
Compare the number of faces, edges, and vertices to tell different solid shapes apart
Explain how solid 3D shapes take up space, unlike flat 2D shapes that lie on a single plane
Apply the relationship \( F + V - E = 2 \) as a quick check for many solid shapes
Match everyday objects, like a ball, a can, or a box, to their matching basic 3D shape
This Unit Includes
Learning resources
TEST-PREP Curriculum Aligned