1. Constructors
2. new
3. Properties
4. area
5. boundingBox
6. center
7. centroid
8. hashCode
9. perimeter
10. runtimeType
11. semiMajorAxis
12. semiMinorAxis
13. Methods
14. noSuchMethod
15. rotate
16. scale
17. toString
18. translate
19. Operators
20. operator ==