特殊四边形作图练习

GeoGebra 命令及参数

1. SelectedIndex(dropdownStudent2) → Index2
2. SelectedIndex(dropdownStudent) → studentAnswer
3. Shuffle(1…10) → randomNumbersQuestion, {6, 5, 10, 4, 8, 9, 7, 3, 1, 2}
4. Element(randomNumbersQuestion, questionCount) → actualRandomTask
5. SelectedIndex(dropdownStudent) → Index1
6. Length(randomNumbersQuestion) → numberOfQuestions
7. Shuffle(1…5) → randomNumbersChild, {1, 2, 5, 4, 3}
8. Shuffle(1…5) → randomNumbersPostIt, {1, 2, 5, 4, 3}
9. Element(randomNumbersChild, Mod[questionCount, Length[randomNumbersChild]] + 1) → actualRandomChild
10. Element(randomNumbersPostIt, Mod[questionCount, Length[randomNumbersPostIt]] + 1) → actualRandomPostIt
11. Polygon(BlackBoxE1, BlackBoxE2, BlackBoxE3, BlackBoxE4) → v1, c, e, f, d
12. PointIn(v1) → G
13. Circle(S_1, 1) → g
14. Line(E, E + (0, 1)) → h
15. Point(h) → J
16. Angle(J, E, G) → α
17. Rotate(E + (3.21, 4.45), α, E) → F
18. Vector(E, F) → u
19. Line(G, E) → i
20. OrthogonalLine(G, i) → j
21. Intersect(g, j) → LightCircP4, LightCircP1
22. Rotate(E + (-0.44, 2.67), α, E) → LichtStart1
23. Rotate(E + (-0.44, 2.67), α, E) → O
24. Rotate(E + (0.21, 2.73), α, E) → LichtStart2
25. Semicircle(LightCircP1, LightCircP4) → k
26. Point(k) → LightCircP2
27. Point(k) → LightCircP3
28. Segment(LichtMid1, LightCircP2) → ray3_{1}
29. Segment(LichtMid2, LightCircP3) → ray4_{1}
30. Segment(BlackBoxE1, BlackBoxE2) → l
31. Point(l) → T
32. Segment(T, BlackBoxE3) → m
33. Point(m) → U
34. Segment(U, BlackBoxE4) → n
35. Point(n) → V
36. Segment(BlackBoxE1, V) → p
37. OrthogonalLine(S_1, Line[T_1, S_1]) → q
38. Intersect(g, q) → V_1, W_1
39. Point(g) → A_2
40. Point(g) → B_2
41. Line(Z_1, q) → r
42. Point(r) → C_2
43. Point(r) → D_2
44. Point(r) → E_2
45. Point(r) → H_2
46. Segment(H_2, V_1) → ray1
47. Segment(E_2, W_1) → ray2
48. Segment(D_2, B_2) → ray3
49. Segment(C_2, A_2) → ray4
50. Segment(F_2, G_2) → s