三角比演示

GeoGebra 命令及参数

1. Line(A, B) → a
2. OrthogonalLine(B, a) → b
3. Point(b) → C
4. Segment(A, B) → AB
5. Segment(C, B) → BC
6. Segment(A, C) → AC
7. Angle(C, B, A) → ABC
8. Angle(C, A, B) → α
9. Angle(A, C, B) → β
10. Midpoint(A, B) → D
11. Midpoint(B, C) → E
12. Midpoint(C, A) → F
13. Segment(A, E) → e
14. Segment(C, D) → f
15. Point(f) → G
16. Point(f) → H
17. Point(e) → I
18. Point(e) → J
19. Vector(J, I) → u
20. Vector(H, G) → v
21. Segment(K, L) → c
22. Segment(M, N) → d
23. Segment(O, P) → g
24. Segment(Q, R) → h
25. Segment(S, T) → i
26. Segment(U, V) → j