相似变换演示 by Mr. Krebs

GeoGebra 命令及参数

1. Polygon(B, C, D, E) → PreImage, b_1, c_1, d_1, e_1
2. Dilate(B, f, A) → B'
3. Dilate(C, f, A) → C'
4. Dilate(D, f, A) → D'
5. Dilate(E, f, A) → E'
6. Polygon(B', C', D', E') → Image, b', c', d', e'
7. Line(B, A) → g
8. Line(A, C) → h
9. Line(A, D) → i
10. Line(A, E) → j
11. Polygon(F, G, H, I) → q1, f_1, g_1, h_1, i_1
12. Dilate(F, Factor_1, J) → F'
13. Dilate(G, Factor_1, J) → G'
14. Dilate(H, Factor_1, J) → H'
15. Dilate(I, Factor_1, J) → I'
16. Polygon(F', G', H', I') → q1', f', g', h', i'
17. Polygon(L, M, N) → t1, n, l, m
18. Dilate(L, Factor, P) → L'_1
19. Dilate(M, Factor, P) → M'_1
20. Dilate(N, Factor, P) → N'_1
21. Polygon(L'_1, M'_1, N'_1) → t1', n', l', m'
22. Angle(t1) → α, β, γ
23. Segment(N', M') → p
24. Rotate(N', β, M') → O'_2
25. Angle(N', M', O'_2) → δ
26. Rotate(M', (-γ), N') → Q'_2
27. Angle(Q'_2, N', M') → ε
28. Ray(M', O'_2) → q
29. Ray(N', Q'_2) → r
30. Intersect(r, q) → L'
31. Polygon(M', L', N') → t2, n'_1, m'_1, l'_1
32. Polygon(O, Q, R, S) → q2, o, q_1, r_1, s
33. Dilate(O, t, T) → O'
34. Dilate(Q, t, T) → Q'
35. Dilate(R, t, T) → R'
36. Dilate(S, t, T) → S'
37. Polygon(O', Q', R', S') → q2', o'_1, q'_1, r', s'
38. Segment(R, T) → k_1
39. Segment(R', T) → j_1
40. TableText({{A1, B1, C1}, {A2, B2, C2}, {A3, B3, C3}}, "|_lll") → text4
41. Textfield(m_1) → InputBox1
42. Polygon(U, V, W, Z) → q3, u_1, v_1, w_1, z_1