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Mod 12 Vocab
| Term | Definition |
|---|---|
| area | The measure of the interior surface of a two=dimensional figure. |
| center | The point from which all points on a circle are the same distance. |
| circle | The set of all points in a plane that are the same distance from a given point called the center. |
| circumference | The difference around a circle. |
| composite figure | A figure that is made up of two or more figures. |
| composite solid | An object made up of more then one solid |
| cone | A three-dimensional figure with one circular base connected |
| cylinder | A three-dimensional figure with two parallel congruent circular bases connected by a curved surface. |
| diameter | The distance across a circle through its center. |
| face | A flat surface of a polyhedron. |
| hemisphere | One of two congruent halves of a sphere. |
| lateral face | In a polyhedron, a face that is not a base. |
| pi | The ratio of a circumference of a circle to its diameter. The Greek letter p represents this number. The value of pi is 3.1415826... Approximations for pi are 3.14 and 22/7. |
| prism | A polyhedron with two parallel congruent faces called bases |
| pyramid | A polyhedron with one base that is a polygon and three or more triangular faces that meet at a common vertex |
| radius | The distance from the center of a circle to any point on the circle. |
| regular pyramid | A pyramid whose base is a regular polygon and in which the segment from the vertex to the center of the base is the altitude. |
| semicircle | Half of a circle. The formula for the area of a semicircle is A= 1/2 pie r squared. |
| slant height | the height of each lateral face. |
| sphere | The set of all points in space that are a given distance from a given point called the center |
| surface area | The sum of the areas of all surfaces (faces) of a three-dimensional figure. |
| volume | The measure of the space occupied by a solid. Standard units of measure are cubic units such as in 3 squared or ft 3 squared. |