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25 Cards in this Set
- Front
- Back
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circle
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The set of points in a plane that area given distance from a given point in the plane. The given point is the center, and the given distance is the radius.
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center of a circle
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the point inside the circle
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radius of circle
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the distance from the center to the side of the circle
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congruent circles
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Circles that have congruent radii.
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diameter of circle
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a chord that passes through the center of the circle. the distance across the circle
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chord, secant
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a segment whose endpoints are points on the circle
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tangent circles
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Coplanar circles that are tangent to the same line at the same point.
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concentric circles
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Circles that lie in the same plane and have the same center.
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common tangent
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a line of segment that is tangent to two circles
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interior of a circle
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all points of the plane that are inside the circle
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exterior of a circle
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all points of the plane that are outside the circle
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point of tangency
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A line in the plane of the circle that intersects the circle in exactly one point, called the point of tangency.
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central angle
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An angle with its vertex at the center of the circle.
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minor arc and its measure
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PART of a circle that measures between 180 and 360
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major arc and its measure
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part of a circle that measures less than 180
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semicircle
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The two arcs of a circle that are cut off by a diameter. The measure of a semicircle is 180.
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congruent arcs
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Arcs, in the same circle or in congruent circles, that have equal measures.
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inscribed angle
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An angle whose vertex is on a circle and whose sides contain chords of the circle.
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intercepted arc
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the arc that lies in the interior of an inscribed angle and has endpoints on the angle
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inscribed polygon
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a polygon whose vertices all lie on a circle
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circumscribed circle
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a circle with an inscribed polygon
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tangent segment
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a segment that is tangent to a circle at an endpoint
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secant segment
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a segment that intersects a circle in two points, with one point as an endpoint of the segment
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external segment
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the part of a secant segment that is not inside the circle
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locus
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the set of all points that satisfy a given condition or a set of given conditions
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