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Warm-up. Area of a regular polygon:________________________ Area of Circle: ______________________________. Learning Intentions: Today I will … Learn new vocabulary: annuluses , sectors , and segments of circles - PowerPoint PPT Presentation
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WARM-UP
Area of a regular polygon:________________________
Area of Circle: ______________________________
Learning Intentions:Today I will…1) Learn new vocabulary: annuluses, sectors, and
segments of circles2) 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.
…But first, are there anyquestions from worksheet 8.5
SectorA sector of a circle is the region between two radii and an arc of the circle.
SegmentA segment of a circle is the region between a chord and an arc of the circle.
Sector
AnnulusA annulus is the region between two concentric circles.
Example 2
Example 3
Example 4
Area of sector
Area of segment
Area of Annulus
Click for Video!
Now Practice.