菱形与不等式演示

GeoGebra 命令及参数

1. Circle(A, B) → c
2. Circle(B, A) → d
3. Intersect(c, d) → C, D, ,
4. Segment(C, A) → a
5. Segment(C, B) → b
6. Segment(D, B) → e
7. Segment(A, D) → f
8. Polygon(A, C, B, D) → poly1, a_1, c_1, b_1, d_1
9. Angle(poly1) → α, β, γ, δ
10. Segment(C, D) → g
11. Segment(B, A) → h
12. Intersect(g, h) → E
13. Distance(C, E) → distanceCE
14. Distance(E, B) → distanceEB
15. Distance(E, D) → distanceED
16. Distance(E, A) → distanceEA
17. Angle(C, E, A) → ε
18. Angle(D, E, B) → ζ
19. Angle(B, E, C) → η
20. Angle(A, E, D) → θ