正弦定理的歧义情况 by Regina Greiwe Jackson

GeoGebra 命令及参数

1. Segment(A, B) → c
2. Point(Circle[B, a_1]) → C
3. Segment(B, C) → a
4. Circle(B, C) → c_1
5. Ray(A, Z) → g
6. Angle(Z, A, B) → α
7. Intersect(c_1, g) → C_2, C_1
8. Segment(B, C_2) → i
9. Segment(B, C_1) → j
10. Segment(A, C_2) → b_2
11. Segment(A, C_1) → b_1
12. Angle(A, B, C) → β
13. Angle(B, C, A) → γ
14. Angle(B, C, A) → δ
15. Segment(A, C) → f
16. Circle(D, E) → d
17. Segment(D, E) → h
18. OrthogonalLine(D, h) → k
19. OrthogonalLine(E, k) → l
20. Intersect(d, l, 2) → F
21. Intersect(d, k, 2) → G
22. Intersect(d, k, 1) → H
23. Intersect(k, l) → I
24. Segment(D, F) → m
25. Segment(D, G) → n
26. Segment(D, H) → s
27. Rotate(E, δ, D) → E'
28. Angle(E, D, E') → ε
29. Segment(D, E') → t
30. Mirror(E', k) → E''
31. Segment(D, E'') → b
32. Angle(E'', D, F) → ζ
33. Segment(E'', E') → e
34. Point(k) → J
35. Point(k) → K
36. Segment(J, K) → f_1
37. Point(l) → L
38. Point(l) → M
39. Segment(L, M) → g_1
40. Segment(A, C) → h_1