平行四边形的性质 by sobarrera

GeoGebra 命令及参数

1. Line(A, B) → a
2. Line(D, a) → b
3. Translate(B, Vector[(0, 0)]) → B'
4. Vector(A, D) → u
5. Translate(B, u) → C
6. Segment(D, C) → c
7. Segment(C, B) → d
8. Segment(B, A) → e
9. Segment(A, D) → f
10. Segment(A, D) → g
11. Segment(D, B) → h
12. Segment(A, C) → i
13. Intersect(h, i) → E
14. Distance(D, E) → distanceDE
15. Distance(C, E) → distanceCE
16. Distance(E, A) → distanceEA
17. Distance(E, B) → distanceEB
18. Distance(D, C) → distanceDC
19. Distance(C, B) → distanceCB
20. Distance(B, A) → distanceBA
21. Distance(A, D) → distanceAD
22. Angle(A, D, C) → α
23. Angle(B, A, D) → β
24. Angle(C, B, A) → γ
25. Angle(D, C, B) → δ
26. Angle(h, i) → ε