Circle and its parts
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9 Terms
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circumference
the length round the outside of the circle (perimeter of a circle)
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Arc
Part of the circumference of a circle
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Radius
The distance from the center of a circle to any point on the circle
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diameter
the distance across a circle through its center
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Chord
a straight line that joins two points on the circumference
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Tangent
a straight line that touches the circumference at only one point
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segment
a portion of a circle that is enclosed by a chord and an arc
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sector
a portion of a circle enclosed by two radii and an arc
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semicircle
half of a circle
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