CIRCLES BASIC BUILDING BLOCKS

Circumference = π x d
Area = π x r x r
Area of half petal = Quadrant – Triangle
Area of full petal = Half petal x 2
Area of boomerang = Square – Quadrant
Finding the difference between overlapped shapes
- Observe which two shapes that overlap.
- Take the difference between the two shapes will remove the overlapped area, as well as get the difference between the un-overlapped parts of the two shapes.