杠杆原理演示

GeoGebra 命令及参数

1. Point(g) → G
2. Point(g) → F
3. Intersect(g, h) → D
4. Ray(D, G) → k
5. Point(k) → I
6. OrthogonalLine(I, k) → m
7. Intersect(m, f_1) → S
8. Intersect(g, i) → E
9. Ray(E, F) → j
10. Point(j) → H
11. OrthogonalLine(H, j) → l_1
12. Intersect(l_1, f_1) → T
13. Intersect(d, m) → K
14. Circle(K, f) → q
15. Intersect(d, l_1) → J
16. Circle(J, e) → p
17. Segment(J, K) → n
18. Intersect(q, n, 1) → M
19. Midpoint(M, K) → R
20. Intersect(p, n, 1) → L_1
21. Midpoint(J, L_1) → L
22. Angle(A, T, S) → γ
23. Angle(A, S, T) → β
24. Distance(R, A) → RA
25. Distance(L, A) → LA
26. Polygon(A, B, C) → poly1, c, a, b
27. Polygon(J, L_1, 4) → poly2, r_1, s, t, a_1, N, O
28. Polygon(M, K, 4) → poly3, b_1, c_1, d_1, e_1, P, Q
29. If(tt < 0, (-β), If[tt ≟ 0, 0*°, γ]) → α
30. Rotate(poly2, α, A) → poly2'
31. Rotate(J, α, A) → J'
32. Rotate(K, α, A) → K'
33. Segment(J', K') → n'
34. Rotate(poly3, α, A) → poly3'
35. Segment(A, S) → g_1
36. Segment(A, T) → h_1
37. If(tt < -1, (-β), If[tt < 1, ((γ + β) / 2 * tt) + (γ - β) / 2, γ]) → θ
38. Rotate(N, α, A) → N'
39. Rotate(Q, α, A) → Q'
40. Distance(L, A) → l
41. Distance(R, A) → r
42. If(tt < 0, "<", If[tt ≟ 0, "=", ">"]) → text5