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Published byKathlyn Brooke Smith Modified over 9 years ago
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W ARM - UP Area of a regular polygon:________________________ Area of Circle: ______________________________
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Learning Intentions: Today I will… 1)Learn new vocabulary: annuluses, sectors, and segments of circles 2)Discover formulas and methods for calculating the area of annuluses, sectors, and segments of circles. Success Criteria: I am successful if… 1)I can identify and apply the appropriate formula for an annulus, sector or segment of a circle. 2)I can complete at least 80% of my practice problems.
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Sector A sector of a circle is the region between two radii and an arc of the circle.
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Segment A segment of a circle is the region between a chord and an arc of the circle. Sector
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Annulus A annulus is the region between two concentric circles.
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Example 2
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Example 3
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Example 4
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Area of sector Area of segment Area of Annulus Area of Annulus Click for Video!
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Now Practice.
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