余弦定理演示 by Jose Arturo Gomez Velasquez

GeoGebra 命令及参数

1. Point(Circle[A, a_2]) → B
2. Segment(A, B) → c
3. Point(Circle[A, b_1]) → C
4. Segment(A, C) → b
5. Segment(C, B) → a
6. Angle(B, A, C) → α_3
7. Angle(A, C, B) → β
8. Angle(C, B, A) → γ
9. Polygon(A, C, B) → poly1, b_2, a_1, c_1
10. Point(Circle[A_1, a_2]) → B_1
11. Segment(A_1, B_1) → c_2
12. Point(Circle[A_1, b_1]) → C_1
13. Segment(A_1, C_1) → b_3
14. Segment(C_1, B_1) → a_3
15. Angle(B_1, A_1, C_1) → α_1
16. Angle(A_1, C_1, B_1) → β_1
17. Angle(C_1, B_1, A_1) → γ_1
18. Polygon(A_1, C_1, B_1) → poly1_1, b_4, a_4, c_3
19. Point(Circle[A_2, a_5]) → B_2
20. Segment(A_2, B_2) → c_4
21. Point(Circle[A_2, b_5]) → C_2
22. Segment(A_2, C_2) → b_6
23. Segment(C_2, B_2) → a_6
24. Angle(B_2, A_2, C_2) → α_2
25. Angle(A_2, C_2, B_2) → β_2
26. Angle(C_2, B_2, A_2) → γ_2
27. Polygon(A_2, C_2, B_2) → poly1_2, b_7, a_7, c_5