| A | B |
|---|
| altitude | The perpendicular distance from the base of a geometric figure to the opposite vertex. |
| base | The number being put to a power: 8^3=8x8x8, 8 is the base. |
| circumference | The distance around a circle: equal to pi times diameter. |
| cone | A solid figure with a circular base and one vertex. |
| cylinder | A solid figure with two parallel, congruent circular bases connected by a curved surface. |
| edge | The line segment along which two faces of a 3D shape intersect. |
| face | A flat surface of a 3D shape. |
| lateral area | The area of the lateral surface of a solid. |
| net | A connected arrangement of polygons in a plane that can be folded up to form a polyhedron. |
| pi | The ratio of the circumference of a circle to the length of its diameter: pi is about 3.14. |
| prism | A 3D shape whose two bases are congruent, parallel polygons in parallel planes and whose lateral faces are parallelograms. |
| pyramid | A polyhedron with one base that is a polygon and with lateral faces that are triangles which share a common vertex. |
| slant height | The length of a lateral edge of a conic solid. |
| solid figure | A three-dimensional shape. |
| sphere | A solid figure with all points the same distance from the center. |
| surface area | The sum of the areas of all the faces, or surfaces, of a solid figure. |
| vertex | The point where two sides meet. |
| volume | The number of cubic units needed to occupy a given space. |
