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Geometry Chap. 10


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.
Created by: osubuckeye1012
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