AREAS
RELATED TO
CIRCLES
Formula Cheat Sheet
, SUMMARY
1 Circle
2 Semicircle
3 Quadrant
4 Annulus
5 Circular sector
6 Circular trapezoid
7 Circular zone
8 Circular segment
, 9 Squaring the lune
10 Mixed curvilinear region
11 Geometric leaf
12 Four-petal flower
13 Intersection of three quadrant sectors
14 Area relationships in similar sectors
15 Area ratios in nested circular sectors
16 Odd-number property in a circular sector