平行四边形的面积公式

GeoGebra 命令及参数

1. Textfield(input1) → InputBox1
2. Textfield(input2) → InputBox2
3. Textfield(input3) → InputBox3
4. Textfield(input4) → InputBox4
5. SpeechBubbleRight(E, 10, 2) → Vieleck1
6. Polygon(F, H, G, I) → v1, f, g, h, i
7. Spline({F, Midpoint[F, H], H}, 3) → AnimStrecke
8. SelectedIndex(DD1) → index1
9. SelectedIndex(DD2) → index2
10. SelectedIndex(DD3) → index3
11. Segment(TriAnimP2, TriAnimP3) → j
12. Angle(TriAnimP3, TriAnimP2, TriAnimP1) → α
13. Segment(TriAnimP3, TriAnimP1) → k
14. Segment(TriAnimP2, TriAnimP1) → l
15. SpeechBubbleRight(E, 9, 1.8) → Vieleck2
16. Segment(I, J) → m
17. Segment(J, H) → n
18. Textfield(InputText) → InputBox5
19. Polygon(I, J, F) → v2, p, q, r
20. Polygon(TriAnimP1, TriAnimP2, TriAnimP3) → d1, trianimp3, trianimp1, trianimp2
21. Polygon(I, J, H, G) → v3, i_2, j_1, h_2, g_2
22. SelectedIndex(DD4) → index4
23. SelectedIndex(DD5) → index5
24. Segment(G, H) → Slide2
25. Point(Slide2) → DynP2
26. OrthogonalLine(DynP2, g) → s
27. Intersect(s, Segment[F, I]) → O
28. Point(Segment[DynP2, Anim2EndP], schieb3) → P
29. Polygon(P, P + Vector[DynP2, O], P + Vector[DynP2, F], P + Vector[DynP2, H]) → v4, p_1, t, a, b
30. Polygon(DynP2, O, I, G) → v5, dynp2, o, i_1, g_1
31. SpeechBubbleRight(POSSpeechStep6, 10, 1.6) → SpeechStep6
32. Angle(P + Vector[DynP2, F], P + Vector[DynP2, O], P) → β
33. Text("$\textsf{\textcolor{db6114}{\bold{h_b}}}$", Midpoint[P, P + Vector[DynP2, O]] - (0.5 * UnitOrthogonalVector[Segment[DynP2, O]]), false, true, 0, 0) → Text4
34. SpeechBubbleRight(R, 11.5, 2) → SpeechBubbleStep7
35. Translate(v4, Vector[F, POSVEnd2]) → v4'
36. Translate(DynP2, Vector[F, POSVEnd2]) → DynP2'
37. Translate(O, Vector[F, POSVEnd2]) → O'
38. Translate(I, Vector[F, POSVEnd2]) → I'
39. Translate(G, Vector[F, POSVEnd2]) → G'
40. Polygon(DynP2', O', I', G') → v5', dynp2', o', i', g'
41. Translate(TriAnimP1, Vector[F, POSVEnd1]) → TriAnimP1'
42. Translate(TriAnimP2, Vector[F, POSVEnd1]) → TriAnimP2'
43. Translate(TriAnimP3, Vector[F, POSVEnd1]) → TriAnimP3'
44. Polygon(TriAnimP1', TriAnimP2', TriAnimP3') → d1', trianimp3', trianimp1', trianimp2'
45. Translate(I, Vector[F, POSVEnd1]) → I'_{1}
46. Translate(J, Vector[F, POSVEnd1]) → J'
47. Translate(H, Vector[F, POSVEnd1]) → H'
48. Translate(G, Vector[F, POSVEnd1]) → G'_{1}
49. Polygon(I'_{1}, J', H', G'_{1}) → v3', i'_{1}, j', h', g'_{1}
50. Angle(Translate[P + Vector[DynP2, F], Vector[F, POSVEnd2]], Translate[P + Vector[DynP2, O], Vector[F, POSVEnd2]], Translate[P, Vector[F, POSVEnd2]]) → γ
51. Angle(TriAnimP3', TriAnimP2', TriAnimP1') → δ
52. PolyLine(G'_{1}, H', J', I'_{1}, G'_{1}) → VEndPoly1
53. PolyLine(TriAnimP3', TriAnimP2', TriAnimP1', TriAnimP3') → VEndPoly2
54. Translate(a, Vector[F, POSVEnd2]) → a'
55. Translate(b, Vector[F, POSVEnd2]) → b'
56. Translate(p_1, Vector[F, POSVEnd2]) → c
57. Translate(t, Vector[F, POSVEnd2]) → t'
58. Segment(DynP2, P) → d
59. Translate(F, Vector[F, EndSkizz3POS]) → EndSkizz3P1
60. Translate(H, Vector[F, EndSkizz3POS]) → EndSkizz3P2
61. Translate(G, Vector[F, EndSkizz3POS]) → EndSkizz3P3
62. Translate(I, Vector[F, EndSkizz3POS]) → EndSkizz3P4
63. Midpoint(EndSkizz3P1, EndSkizz3P3) → EndSkizz3M
64. PolyLine({EndSkizz3M + (Vector[EndSkizz3M, EndSkizz3P1] * relsizeEndSkizz), EndSkizz3M + (Vector[EndSkizz3M, EndSkizz3P2] * relsizeEndSkizz), EndSkizz3M + (Vector[EndSkizz3M, EndSkizz3P3] * relsizeEndSkizz), EndSkizz3M + (Vector[EndSkizz3M, EndSkizz3P4] * relsizeEndSkizz), EndSkizz3M + (Vector[EndSkizz3M, EndSkizz3P1] * relsizeEndSkizz)}) → EndSkizz3Outline
65. Point(EndSkizz3Outline) → T
66. Point(EndSkizz3Outline) → U
67. Point(EndSkizz3Outline) → V
68. Point(EndSkizz3Outline) → W
69. Segment(W, V) → e
70. Intersect(OrthogonalLine[U, e], e) → Z
71. Point(EndSkizz3Outline) → A_1
72. Intersect(OrthogonalLine[T, Segment[A_1, W]], Segment[A_1, W]) → B_1
73. Segment(B_1, T) → radcon_1
74. Segment(Z, U) → radcon_2
75. Translate(TriAnimP2, Vector[F, POSVEnd1]) → TriAnimP2'_{1}
76. Translate(TriAnimP3, Vector[F, POSVEnd1]) → TriAnimP3'_{1}
77. Segment(TriAnimP2'_{1}, TriAnimP3'_{1}) → j'_{1}
78. Translate(p_1, Vector[F, POSVEnd2]) → f_1