Lesson 11.5 - 11.7
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8 Terms
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Circumference
Distance around a circle
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Circumference Formula
2 x pi x radius or pi x diameter
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Sector
Region bounded by two radii and the arc between them
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Arc Length
Length of a part of the circle’s circumferenc
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Arc Length Formula
(Arc Measure/360)/ 2 x pi x radius
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Area of a Sector
(Arc Measure/360)/ Circle Area
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Similar Figures
Same shape, different proportional size
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Scale Factor
Ratio between corresponding sides of similar figures
Note 
Flashcards (25)