探究菱形性质 by ctmathnut

GeoGebra 命令及参数

1. Line(A, B) → a
2. LineBisector(B, A) → b
3. Point(b) → C
4. Mirror(C, a) → D
5. Segment(D, A) → c
6. Segment(D, B) → d
7. Segment(B, C) → e
8. Segment(A, C) → f
9. Segment(D, C) → g
10. Segment(B, A) → h
11. Intersect(g, h) → E
12. Segment(C, E) → i
13. Segment(E, A) → j
14. Segment(E, D) → k
15. Segment(E, B) → l
16. Angle(D, E, A) → α
17. Angle(C, E, B) → β
18. Angle(C, A, E) → γ
19. Angle(E, A, D) → δ
20. Angle(A, D, E) → ε
21. Angle(E, D, B) → ζ
22. Angle(D, B, E) → η
23. Angle(E, B, C) → θ
24. Angle(B, C, E) → ι
25. Angle(E, C, A) → κ
26. Segment(D, A) → p
27. Segment(A, C) → q
28. Segment(C, B) → r
29. Segment(B, D) → s