菱形的性质 by Alfred Estberg

GeoGebra 命令及参数

1. Circle(M, O) → c
2. Point(c) → R
3. Segment(M, O) → a
4. Segment(M, R) → b
5. Line(O, b) → d
6. Line(R, a) → e
7. Intersect(d, e) → H
8. Segment(O, H) → f
9. Segment(H, R) → g
10. Polygon(M, O, H, R) → poly1, a_1, b_1, c_1, d_1
11. Segment(M, H) → h
12. Segment(O, R) → i
13. Intersect(h, i) → E
14. Circle(O, (Distance[O, R] * ReflectAC / 10)) → k
15. Intersect(k, i) → F, H_1
16. Polygon(M, F, H) → poly2, m, n, q
17. Circle(M, (Distance[M, H] * ReflectBD / 10)) → p
18. Intersect(p, h) → G, I
19. Polygon(R, G, O) → poly3, r, s, t
20. Rotate(M, α, E) → A'
21. Rotate(O, α, E) → B'
22. Rotate(H, α, E) → C'
23. Rotate(R, α, E) → D'
24. Polygon(A', B', C', D') → poly1', a', b', c', d'
25. Segment(A', C') → j
26. Segment(B', D') → l
27. Intersect(h, i) → B
28. Point(a) → A
29. OrthogonalLine(A, a) → f_1
30. Circle(M, ((2 * ReflectPerp) * Segment[A, M])) → e_1
31. Intersect(f_1, g) → C
32. Circle(R, ((ReflectPerp * 2) * Segment[R, C])) → g_1
33. Intersect(g_1, g, 1) → D
34. Intersect(e_1, Ray[M, O], 1) → J
35. Polygon(A, C, D, J) → q1, a_2, c_2, d_2, j_2