两点间距离公式——GeoGebra交互式范例

GeoGebra 命令及参数

1. Segment(P, Q) → f
2. Slope(Line[P, Q]) → s
3. If(y(P) ≤ y(Q), P, Q) → M
4. If(y(P) ≤ y(Q), Q, P) → N
5. Line(M, xAxis) → g
6. Line(N, yAxis) → h
7. Intersect(g, h) → K
8. Angle(N, K, M) → α
9. Line(N, xAxis) → j
10. Line(M, yAxis) → k
11. Intersect(j, yAxis) → C
12. Intersect(h, xAxis) → D
13. Intersect(k, xAxis) → E
14. Intersect(g, yAxis) → F
15. Segment(N, D) → l
16. Segment(N, C) → m
17. Segment(M, F) → n
18. Segment(M, E) → p
19. Segment(N, K) → q
20. Segment(M, K) → r
21. Midpoint(N, K) → A
22. Circle(A, 0.5) → c
23. Line(A, xAxis) → t
24. Intersect(c, t) → G, H
25. Length(r) → a
26. Length(q) → b
27. Midpoint(M, K) → B
28. Text(x(P)) → x_P
29. Text(y(P)) → y_P
30. If(x(Q) ≥ 0, Text[x(Q)], "(" + (Text[x(Q)]) + ")") → x_Q
31. If(y(Q) ≥ 0, Text[y(Q)], "(" + (Text[y(Q)]) + ")") → y_Q
32. If(Xv ≥ 0, Text[Xv], "(" + (Text[Xv]) + ")") → Xt
33. If(Yv ≥ 0, Text[Yv], "(" + (Text[Yv]) + ")") → Yt
34. SelectedIndex(Bahasa) → nn
35. If(nn ≟ 1, "Distance PQ", "Jarak PQ") → text4
36. If(nn ≟ 1, "units", "unit") → UTex