Circle Vocabulary (Geometry) – Flashcards
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the set of all points in a plane, equidistant from a given point
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circle
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the given point, what the circle is named by
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center
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the distance from the center to any point on the circle
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radius
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a segment whose endpoints are on the circle
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chord
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a chord that contains the center of the circle
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diameter
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a line, segment, or ray that intersects the circle at a single point
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tangent
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the point is the point
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tangency
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a line that intersects a circle at exactly 2 points
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secant
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the area around a circle (pixd or 2pir)
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circumference
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the ratio of a circle's circumference to its diameter
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Pi
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the part of the circle created by the central angle
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arc
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measures less than 180
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minor arc
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measures between 180 and 360
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major arc
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measures exactly 180
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semi- circle
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part of the circle from the 2 points on the arc
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arc length
