风筝形性质探究

GeoGebra 命令及参数

1. Segment(A, B) → f
2. Point(Circle[A, f]) → D
3. Segment(A, D) → h
4. Segment(B, D) → g
5. OrthogonalLine(A, g) → i
6. Point(i) → C
7. Segment(C, D) → k
8. Segment(A, C) → l
9. Angle(g, l) → α
10. Segment(B, C) → j
11. Segment(B, A) → m
12. Segment(A, D) → n
13. Segment(D, C) → p
14. Segment(C, B) → q
15. Distance(A, C) → distanceAC
16. Distance(D, B) → distanceDB
17. Angle(A, B, C) → β
18. Angle(B, C, D) → γ
19. Angle(C, D, A) → δ
20. Angle(D, A, B) → ε