McDougal Littel Vocab.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| The set of all points in a plane that are equidistant from a given point | circle
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| A give point that is equidistant to all the points in a plane | center of circle
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| The distance from the center of a circle to a point on the circle. A segment whose endpoints are the center of the circle and a point on the circle. | radius of circle
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| Two circles that have the same radius. | congruent circles
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| A chord that passes through the center of the circle. The distance across a circle, through its center. | diameter of circle
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| A segment whose endpoints are points on the circle. | chord of a circle
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| Circle that intersect in one point. | tangent circles
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| Circles that have a common center. | concentric circles
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| A line or segment that is tangent to two circles. A common internal tangent intersects the segment that joins the centers of the two circles. A common external tangent does not intersect the segment that joins the centers of the two circles. | common tangent
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| All points of the plane that are inside a circle. | interior of a circle
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| All points of the plane that are outside a circle. | exterior of a circle
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| A line that intersects a circle in exactly one point. | point of tangency
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| An angle whose vertex is the center of a circle. | central angle of a circle
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| Part of a circle measures less than 180 degrees. | minor arc
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| Part of a circle that measures between 180 degrees and 360 degrees. | major arc and its measure
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| An arc whose endpoints are the endpoints of a diameter of the circle. | semicircle
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| Two arcs of the same circle or of congruent circles that have the same measure. | congruent arcs
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| An angles whose vertex in on a circle and whose sides contain chords of the circle. | inscribed angle
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| The arc that lies in the interior of an inscribed angle and has endpoints on the angle. | intercepted arc
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| A polygon whose vertices all lie on a circle. | inscribed polygon
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| A circle with an inscribed polygon. | circumscribed circle
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| A segment that is tangent to a circle at an endpoint. | tangent segment
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| A segment that intersects a circle in two points, with one point as an endpoint of the segment. | secant segment
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| The part of a segment that is not inside the circle. | external segment
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| The set of all points that satisfy a given condition or a set of given conditions. | locus
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| A segment that intersects a circle in two points, with one point as an endpoint of the segment. | secant tangent
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