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Geometry Chap. 10
Vocabulary
Question | Answer |
---|---|
Area of a Parallelogram (Theorem 10-1) | The product of a base and the corresponding height. |
Area of a Rectangle (Theorem 10-2) | The product of its base and height. |
Area of a Triangle (Theorem 10-3) | Half the product of a base and the corresponding height |
Base of a parallelogram | Any one of its sides. |
Altitude of a parallelogram | A segment perpendicular to the line containing the base, drawn from the side opposite the base. |
Height of a parallelogram | The length of an altitude. |
Base of a triangle | Any one of its sides. |
Height of a triangle | The length of the altitude to the line containing that base. |
Height of a trapezoid | The perpendicular distance between the bases. |
Radius of a regular parallelogram | The distance from the center to a vertex. |
Apothem | The perpendicular distance from the center to a side. |
Circle | In a plane, a circle is the set of all points equidistant from a given point called the center. |
Center | The middle point of a circle or sphere, equidistant from every point on the circumference or surface. |
Diameter | A segment that contains the center of a circle and has both endpoints on the circle. |
Radius | A segment that has one endpoint at the center and the other endpoint on the circle. |
Congruent Circles | Have congruent radii |
Central Angle | an angle whose vertex is the center of the circle. |
Semicircle | Half of a circle |
Minor arc | Smaller than a semicircle |
Major arc | Larger than a semicircle |
Adjacent arcs | Arcs of the same circle that have exactly one point in common. |
Circumference | The distance around the circle. |
Pi | The ratio of the circumference of a circle to its diameter. |
Concentric Circles | Coplaner circles that have the same center. |
Arc Length | A fraction of the circumference. |
Sector of a circle | A region bounded by an arc of the circle and the two radii to the arc's endpoints. |
Segment of a circle | A part of a circle bounded by an arc and the segment joining its endpoints. |
Geometric probability | Points on a segment or in a region of a plane represent outcomes. The geometric probability of an event is a ratio that involves geometric measures such as length or area. |