| A | B |
|---|
| base | The bottom of a 3-D shape. |
| cone | A 3-D shape with a circular end and a pointed end. |
| cube | a 3-dimensional shape with six identical square faces |
| cylinder | A 3-D shape with two opposite faces that are congruent circles. A rectangle (the side wall) is wrapped around the circular ends. |
| edge | the line segment formed where two faces of a 3-D shape meet |
| face | a polygon that forms one of the flat surfaces of a 3-D shape |
| flat pattern | an arangement of attached polygons that can be folded into a 3-D shape |
| prism | a 3-D shape with a top and a bottom that are congruent polygons and faces that are parallelograms |
| rectangular prism | a 3-dimensional shape with six rectangular faces |
| sphere | a 3-D shape, such as a ball, whose surface consists of all the points that are a given distance from the center of the shape |
| surface area | The area required to cover a 3-D shape. In a prism, it is the sum of all of the areas of all of the surfaces. |
| unit cube | A cube with all edges equal to one unit length. It is the basic measurement for volume. |
| volume | The amount of space, or the capacity, of a 3-D shape. It is the number of unit cubes that will fit into a 3-D shape. |
| area | the number of square units that fill a 2-D shape |
| circumference | the perimeter of a circle |
| congruent | a word meaning equal size and shape |
| dimensions | the linear measurements of an object |
| perimeter | the sum of the lengths of the sides of a polygon. |
| radius | the distance from the center of a circle to any point on the circle |
| scale | The ratio of any length in a scale drawing to the corresponding actual length. The lengths may be in different units. |
