MATH 3RD QTR EXAM
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Definition of Terms
Last updated 5:14 PM on 3/29/26
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11 Terms
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Center
Middle point; name of the circle
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Arc |
Part of the circumference of a circle
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Radius
Line from the center to any point in the circle’s circumference; ½ diameter |
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Diameter
Longest chord Passes through the center; divides circle into 2 2(radius) |
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Chord
One point on the circle to another
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Sector
Part of a circle, formed by two radii
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Segment
Part of a circle formed by a chord |
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Tangent
Line that touches a point on the circle
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Secant
Line/chord that extends outside the circle
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Circumference
Total perimeter of a circle C = 2πr |
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Area of a Circle |
Total area of a circle Ao = πr^2 |
