| A | B |
|---|
| Circumference | The distance around a circle |
| Radius | A line segment from the center of a circle to any point on the outside of the circle. It is equal to half the diameter |
| Diameter | A line segment across a circle that passes through the center of the circle |
| Chord | A line segment with both endpoints on the outside of the circle, but which does not pass through the center of the circle. |
| Arc | A section of the circumference of a circle |
| Polyhedron | A solid figure in which all sides are polygons |
| Pyramid | A polyhedron that has one base and triangular faces |
| Prism | A polyhedron that has two congruent bases |
| Edge | The line segment where two faces of a polyhedron meet |
| Vertex | The point where three edges meet |
| Curved solid | Any solid figure with no edges |
| Sphere | A curved solid with no bases or faces |
| Cone | A figure with a flat circular base and one curved surface leading to a vertex |
| Cylinder | A figure with one curved surface and two parallel bases that are congruent circles |
| Hemisphere | Half a sphere with a circular base |
| Faces | Connected polygons that makes up a section of a polyhedron |
| Sphere | A curved solid that has no base |
