矩形的性质 by karabarmaths

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → O
2. Circle(O, r) → c
3. Point(c) → A
4. Line(A, O) → a
5. Intersect(c, a) → B_1, C
6. Rotate(C, α, O) → B
7. Angle(C, O, B) → β
8. Line(B, O) → b
9. Intersect(c, b) → E, D
10. Polygon(A, D, C, B) → P, a_1, f, c_1, d
11. Segment(A, O) → e
12. Segment(O, C) → g
13. Segment(D, O) → h
14. Segment(O, B) → i
15. Angle(D, A, B) → γ
16. Angle(C, D, A) → δ
17. Angle(A, B, C) → ε
18. Angle(B, C, D) → ζ
19. Angle(D, O, C) → η
20. Angle(A, B, D) → θ
21. Angle(D, B, C) → ι