相似直角三角形中的三角恒等式

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Circle(A, 1) → c
3. Point(c) → B
4. Ray(A, B) → a
5. OrthogonalLine(B, b) → d
6. Intersect(b, d) → C
7. Intersect(b, xAxis) → D
8. Intersect(c, b) → E, F
9. Line(F, d) → e
10. Angle(b, a) → θ
11. Segment(A, B) → f
12. Angle(B, C, A) → α
13. Segment(A, C) → g
14. Segment(C, B) → h
15. Intersect(e, a) → G
16. Segment(F, G) → i
17. Angle(G, F, A) → β
18. Line(G, b) → j
19. Segment(A, G) → l
20. Point(c) → H
21. Segment(A, H) → radius
22. OrthogonalLine(I, e) → m
23. Intersect(m, a) → J
24. Segment(I, J) → n
25. Angle(J, I, A) → γ
26. Angle(I, J, A) → δ
27. OrthogonalLine(J, a) → p
28. Line(A, p) → q
29. Point(q) → L
30. OrthogonalLine(L, q) → s
31. Intersect(p, s) → M
32. Segment(L, M) → t
33. Angle(J, M, L) → ε
34. Angle(M, L, A) → ζ
35. Angle(A, J, M) → η