筝形的性质 by akumar2022

GeoGebra 命令及参数

1. Circle(A, B) → c
2. Segment(A, B) → f
3. Point(c) → C
4. Segment(A, C) → g
5. Segment(B, C) → h
6. Mirror(A, h) → A'
7. Mirror(C, h) → C'
8. Segment(A', C') → g'
9. Mirror(A, h) → A'_1
10. Mirror(B, h) → B'
11. Segment(A'_1, B') → f'
12. Angle(B, A', C) → α
13. Angle(B, A, C) → β
14. Angle(A', B, A) → γ
15. Angle(A', C, A) → δ
16. Segment(B, C) → i
17. Segment(A, A') → j
18. Intersect(i, j) → D
19. Intersect(i, j) → E
20. Angle(B, D, A) → ε
21. Angle(B, D, A') → ζ
22. Angle(A', D, C) → η
23. Angle(A, D, C) → θ
24. Distance(A', A) → distanceA'A
25. Midpoint(A', A) →
26. Distance(B, C) → distanceBC
27. Midpoint(B, C) →