探究矩形性质

GeoGebra 命令及参数

1. Segment(A, B) → a
2. OrthogonalLine(B, a) → b
3. OrthogonalLine(A, a) → c
4. Point(c) → C
5. Segment(A, C) → d
6. Line(C, a) → e
7. Intersect(b, e) → D
8. Segment(D, C) → f
9. Segment(B, D) → g
10. Segment(B, C) → h
11. Segment(A, D) → i
12. Intersect(h, i) → E
13. Segment(B, E) → j
14. Segment(C, E) → k
15. Segment(A, E) → l
16. Segment(E, D) → m
17. Angle(C, A, B) → α
18. Angle(A, B, D) → β
19. Angle(B, D, C) → γ
20. Angle(D, C, A) → δ
21. Segment(A, C) → r
22. Segment(C, D) → s
23. Segment(D, B) → t
24. Segment(B, A) → a_1