菱形变矩形

GeoGebra 命令及参数

1. Segment(A, B) → a
2. LineBisector(a) → b
3. Intersect(a, b) → C
4. Point(b) → D
5. Segment(A, D) → c
6. Line(B, c) → d
7. Intersect(d, b) → E
8. Polygon(A, E, B, D) → poly1, a_1, e, b_1, d_1
9. Segment(D, E) → f
10. Segment(F, G) → g
11. Mirror(D, g) → E'
12. Mirror(E, g) → D'
13. Segment(E', D') → f'
14. Vector(E, C) → u
15. Translate(A, u) → A'_1
16. Translate(B, u) → B'
17. Segment(A'_1, B') → a'
18. Segment(A'_1, D) → h
19. Mirror(A'_1, g) → C'''
20. Mirror(D, g) → D'_1
21. Segment(C''', D'_1) → h'
22. Line(C''', f') → i
23. Line(D', h') → j
24. Intersect(i, j) → C''
25. Polygon(C'', D', E', C''') → poly2, h_1, e', d', a''
26. LineBisector(a'') → k
27. Intersect(a'', k) → A'
28. Intersect(f', e') → J
29. Intersect(k, f') → C'
30. Segment(D', A') → l
31. Segment(A', E') → m
32. Segment(A', C') → n
33. PointIn(poly1) → Pointpoly1
34. PointIn(poly2) → Pointpoly2
35. Polygon(A, D, E) → poly3, e_1, a_2, d_2
36. Polygon(D', A', E') → poly4, e'_1, d'_1, a'_1
37. Polygon(C, E, B) → poly5, b_2, c_1, e_2
38. Polygon(C''', E', A') → poly6, a'_2, c''', e'_2
39. Polygon(D, C, B) → poly7, b_3, d_3, c_2
40. Polygon(C'', D', A') → poly8, a'_3, c'', d'_2