| A | B |
|---|
| cone | a three dimensional figure with one vertex and one circular base |
| legs | In a right triangle, the sides that include the right angle |
| sphere | a three-dimensional figure with all points the same distance from the center |
| radius | a line segment with one endpoint at the center of the circle and the other endpoint on the circle |
| hemisphere | a half of a sphere |
| diameter | a line segment that passes through the center of the circle and has endpoints on the circle |
| right cone | a cone in which a perpendicular line is drawn from the base to the tip passes through the center of the base |
| regular pyramid | a pyramid whose base is a regular polygon and whose lateral faces are all congruent |
| circle | the set of all points in a plane that are the same distance from a given point called the center |
| hypotenuse | in a right triangle, the side opposite the right angle |
| circumference | the distance around a circle |
| surface area | the sum of the areas of the faces, or surfaces of a three dimensional figure |
| cylinder | a three dimensional figure with two parallel congruent circular bases connected by a curved lateral surface |
| prism | a polyhedron that has two congruent, polygon-shaped bases and other faces that are all parallelograms |
| pythagorean theorem | The theorem stating that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the legs |
| slant height | the distance from the base of a cone to its vertex, measured along the lateral surface |
| lateral surface | In a cylinder, the curved surface connecting the circular bases; in a cone, the curved surface that is not a base |
| pyramid | a polyhedron with a polygon base and triangular sides that all meet at a common vertex |
| lateral face | In a prism or pyramid, a face that is not a base |
