垂直线 by Jeff Caldwell

GeoGebra 命令及参数

1. Line(A, B) → f
2. Intersect(g_2, h) → C
3. Polygon(A, C, B) → poly1, b, a, c
4. Segment(A, C) → i
5. Segment(C, B) → j
6. Angle(B, C, A) → α
7. Slope(f) → d_1
8. FractionText(d_1) → text1
9. Denominator(d_1) → d
10. Numerator(d_1) → n
11. OrthogonalLine(D, f) → g
12. Intersect(l, m) → F
13. Polygon(D, F, E) → poly2, e, d_2, f_1
14. Polygon(H, G, A) → poly3, a_1, h_1, g_1
15. Segment(H, G) → p
16. Segment(G, A) → q
17. Segment(D, F) → r
18. Segment(F, E) → s
19. Angle(H, G, A) → β
20. Angle(E, F, D) → γ
21. Intersect(f, g) → I
22. Angle(B, I, D) → δ
23. FractionText(Slope[g]) → text2
24. Distance(D, I) → distanceDI
25. Distance(D, E) → distanceDE
26. Distance(A, B) → distanceAB