正弦定理练习 by colinrchambers

GeoGebra 命令及参数

1. Angle(C, A, B) → α
2. Polygon(A, B, C) → poly1, c, a, b
3. OrthogonalLine(A, a) → d
4. Intersect(d, a) → D
5. Segment(C, D) → e
6. Segment(B, D) → f
7. Angle(B, C, A) → γ
8. Angle(A, B, C) → β
9. Point(b) → E
10. Point(c) → F
11. Polygon(G, H, J) → poly2, j, g, h
12. Point(h) → I
13. Point(j) → K
14. Point(g) → L
15. Angle(J, G, H) → δ
16. Angle(G, H, J) → ε
17. Angle(H, J, G) → ζ