平行与垂直线的斜率 by Radha Narve

GeoGebra 命令及参数

1. Point(xAxis) → A
2. Point(xAxis) → C
3. Line(C, D) → b
4. OrthogonalLine(E, b) → c
5. Line(A, b) → a
6. Point(xAxis) → F
7. Angle(F, C, D) → β
8. Point(a) → B
9. Angle(F, A, B) → α
10. Angle(b, c) → γ
11. OrthogonalLine(D, xAxis) → d
12. Point(b) → I
13. Point(a) → J
14. OrthogonalLine(I, xAxis) → f
15. OrthogonalLine(J, xAxis) → h
16. OrthogonalLine(I, xAxis) → i
17. OrthogonalLine(J, xAxis) → j
18. Intersect(b, c) → G
19. Intersect(c, i) → H
20. OrthogonalLine(G, i) → k
21. OrthogonalLine(H, j) → l
22. Intersect(i, k) → K
23. Segment(G, K) → p
24. Segment(I, K) → q
25. Segment(K, H) → t1
26. Intersect(c, a) → L
27. OrthogonalLine(L, j) → n
28. Intersect(j, n) → M
29. Segment(J, M) → s_1
30. Segment(L, M) → s
31. Segment(J, M) → r
32. Distance(q, t1) → o
33. Polygon(I, G, K) → poly1, k_1, i_1, g
34. Polygon(G, H, K) → poly2, k_2, g_1, h_1
35. Polygon(L, J, M) → poly3, m_1, l_1, j_1