Chapter 8 - Geometry Vocabulary
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Created by:
poppysimpson on June 16, 2011
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11 terms
Terms | Definitions |
|---|---|
 convex | A polygon in which all vertices appear to be pushed outward. |
| concave | A polygon in which at least one vertex appear to be pushed inward. |
| regular polygon | a polygon with congruent sides and angles |
| area | a measure of how much surface an object has |
| height of a triangle | the perpendicular distance from any point to opposite side |
| circle | The set of all points in a plane that are the same distance from a given point called the center |
| radius | The distance from the center of a circle to a point on the circle |
| diameter | A line segment that passes through the center of a circle and has endpoints on the circle |
| circumference | the perimeter of a circle |
| central angle | An angle with a vertex at the center of a circle and whose sides are radii of the circle |
| sector | The part of a circle that looks like a piece of pie. A sector is bounded by 2 radii and an arc of the circle. |
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