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Lesson 6
lesson 6
| Term | Definition |
|---|---|
| Diameter | a line segment that goes through the center of a circle and has endpoints on the circle; the distance across a circle through the center |
| pi | in a circle, the quotient circumference/ diameter. A common approximation is 3.14 |
| Radius (of a circle) | a line segment from the center of a circle to any point on the circle; also, the distance from the center to any point on a circle |
| area | the amount of space inside a closed two-dimensional figure; measured in square units such as square centimeters |
| Unit rate | the numerical part of a rate |
| Approximate (adjective) | almost exact |
| Approximate (verb) | to find a close position or almost exact value of something |
| Circumference | the distance around the outside of a circle; it can be thought of as the perimeter of the circle |
| Circle | a two-dimensional shape in which every point is the same distance from the center |
| Center (of a circle) | a point that is the same distance from every point on the circle |
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