WARM-UP
Area of a regular polygon:________________________
Area of Circle: ______________________________
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.
Sector
A sector of a circle is the region between two radii and an arc of
the circle.
Segment
A segment of a circle is the region between a chord and an arc of
the circle.
Sector
Annulus
A annulus is the region between two concentric circles.
Example 2
Example 3
Example 4
Click for Video!
Area of sector
Area of segment
Area of
Annulus
Now Practice.