力的平行四边形法则

GeoGebra 命令及参数

1. Rotate(G, β, A) → G'
2. Segment(A, B) → f
3. Segment(A, C) → g
4. Vector(A, C) → w
5. Translate(B, w) → B'
6. Segment(C, B') → h
7. Segment(B, B') → i
8. Vector(A, B) → a
9. Vector(A, B') → b
10. Angle(C, A, B) → α
11. Distance(A, B') → d
12. Segment(A, B') → j
13. Midpoint(j) → D
14. Segment(A, B) → k
15. Segment(A, C) → l
16. Midpoint(k) → E
17. Midpoint(l) → F
18. Angle(C, A, B') → γ
19. Angle(B', A, G') → δ