比较正方形与菱形的面积

GeoGebra 命令及参数

1. Segment(A, B) → a
2. Circle(B, A) → c
3. Circle(A, B) → d
4. OrthogonalLine(A, a) → b
5. OrthogonalLine(B, a) → e
6. Intersect(d, b, 2) → C
7. Intersect(c, e, 2) → D
8. Segment(C, D) → f
9. Segment(C, A) → g
10. Segment(D, B) → h
11. Polygon(A, C, D, B) → poly1, a_1, c_1, d_1, b_1
12. Angle(B, A, C) → α
13. Angle(A, C, D) → β
14. Angle(C, D, B) → γ
15. Angle(D, B, A) → δ
16. Distance(C, D) → distanceCD
17. Distance(D, B) → distanceDB
18. Distance(B, A) → distanceBA
19. Distance(A, C) → distanceAC
20. Point(c) → E
21. Segment(B, E) → i
22. Line(A, i) → j
23. Line(E, a) → k
24. Intersect(j, k) → F
25. Segment(A, F) → l
26. Segment(F, E) → m
27. Distance(l, i) → n
28. Polygon(A, F, E, B) → poly2, a_2, f_1, e_1, b_2