分数乘法面积模型问题

GeoGebra 命令及参数

1. Segment((0, 3), (4.8, 3)) → e
2. Point(e) → H15
3. Point(e) → H14
4. Point(e) → H13
5. Point(e) → H12
6. Point(e) → H11
7. Point(e) → H10
8. Point(e) → H9
9. Point(e) → H8
10. Point(e) → H7
11. Point(e) → H6
12. Point(e) → H5
13. Point(e) → H4
14. Point(e) → H3
15. Point(e) → H2
16. Point(e) → H1
17. Element(f2denom, ex) → d
18. Element(f2num, ex) → c
19. Element(f1num, ex) → a
20. Element(f1denom, ex) → b
21. Max(Sequence[If[Mod[a * c, i] + Mod[b * d, i] ≟ 0, i, -1], i, 1, Min[{a * c, b * d}]]) → Simplified_{GCF}
22. Sequence(A + t * (B - A), t, 0, 1, 1 / b) → L1
23. Sequence(C + t * (D - C), t, 0, 1, 1 / b) → L2
24. Segment(A, B) → c_1
25. Segment(C, D) → d_1
26. Sequence(Segment[Element[L1, k], Element[L2, k]], k, 2, b) → L5
27. Element(dragPoint, ex) → H
28. Segment(H, E) → f
29. Segment(E, F) → g
30. Segment(F, G) → h
31. Segment(G, H) → i
32. Segment(D, B) → j
33. Segment(C, A) → k
34. Element(L1, a + 1) → T1
35. Element(L2, a + 1) → T2
36. Polygon(A, T1, T2, C) → poly1, a_1, t1, t2, c_2
37. Sequence(E + t * (H - E), t, 0, 1, 1 / d) → L3
38. Sequence(F + t * (G - F), t, 0, 1, 1 / d) → L4
39. Sequence(Segment[Element[L3, k], Element[L4, k]], k, 2, d) → L6
40. Element(L3, c + 1) → T3
41. Element(L4, c + 1) → T4
42. Polygon(E, F, T4, T3) → poly2, e_1, f_1, t4, t3
43. FractionText(Element[f1num, ex] * Element[f2num, ex] / (Element[f1denom, ex] * Element[f2denom, ex])) → simplText
44. Element(numList, ex) → num
45. Element(denomList, ex) → denom
46. Polygon((0, 0), (3 * Element[f1num, ex] / Element[f1denom, ex], 0), (3 * Element[f1num, ex] / Element[f1denom, ex], 3 * Element[f2num, ex] / Element[f2denom, ex]), (0, 3 * Element[f2num, ex] / Element[f2denom, ex])) → overlap, m, n, p, q
47. If(bl, 0, 1) → black