梯形与等腰梯形

GeoGebra 命令及参数

1. Segment(A, B) → a
2. Line(C, a) → b
3. Point(b) → D
4. Segment(A, C) → c
5. Segment(B, D) → d
6. Segment(C, D) → e
7. Segment(E, F) → f
8. LineBisector(f) → g
9. Point(g) → G
10. Circle(G, H) → h
11. Line(G, f) → i
12. Intersect(h, i, 1) → I
13. Intersect(h, i, 2) → J
14. Segment(E, I) → j
15. Segment(F, J) → k
16. Segment(J, I) → l
17. Angle(J, I, E) → α
18. Angle(F, J, I) → β
19. Segment(E, J) → m
20. Segment(F, I) → n
21. Distance(F, I) → distanceFI
22. Midpoint(F, I) →
23. Distance(E, J) → distanceEJ
24. Midpoint(E, J) →
25. Segment(A, D) → p
26. Segment(B, C) → q