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2.
Definitions pg 293 A circle is the set of all points in a plane equidistant from a given point, called the center. B r O r r C A
3.
Definitions pg 293 A secant of a circle is a line that intersects the circle in two points. A chord of a circle is a segment whose endpoints lie on the circle.
5.
Definitions pg 293 A diameter of a circle is a chord containing the center. It is the longest chord. A radius of a circle is a segment from the center to a point on the circle. radius Radius = AO O A B Diameter = AB diameter What is the relationship between a radius and a diameter?
6.
Identify if the following is a radius, diameter, or chord. BC EI FJ GD GF IF FH DA MK FM
34.
pg 294 The interior of a circle is the set of all points of the plane whose distance from the center is less than the radius. (inside) Theexterior of a circle is the set of all points of the plane whose distance from the center is greater than the radius. (outside) O Exterior Interior
35.
pg 294 A tangent line to a circle is a line in the plane of the circle that intersects the circle in exactly one point. The point where a circle and a tangent intersect is the point of tangency.
36.
Tangents and Secants Tangents and secants are LINES. A tangent line intersects the circle at exactly ONE point. A secant line intersects the circle at exactly TWO points.
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