三维反射与向量

GeoGebra 命令及参数

1. Textfield(a) → InputBox1
2. Textfield(b) → InputBox2
3. Textfield(c) → InputBox3
4. Textfield(d) → InputBox4
5. Textfield(f) → InputBox5
6. Textfield(g) → InputBox6
7. Polygon(A, B, C) → t1, c_1, a_1, b_1
8. Segment(C, B) → h
9. Segment(B, A) → i
10. Segment(A, C) → j
11. Angle(C, B, A) → α
12. Circle(D, (10 * a) + b) → e
13. Point(e) → E
14. Circle(E, c) → k
15. Segment(D, E) → l
16. If(Length[Mode[l1]] ≟ 0, "No digits repeat!", "Repeated digits exist.") → text4
17. Mirror(E, l) → E'
18. Mirror(D, l) → D'
19. Mirror(E, l) → E'_{1}
20. Mirror(D, l) → D'_{1}
21. Circle(D, sqrt((100 * d) + (10 * f) + g)) → q
22. Intersect(k, q, 2) → F
23. Segment(D, F) → m
24. Segment(F, E) → n
25. Angle(F, E, D) → β
26. Polygon(D, E, F) → t2, f_1, d_1, e_1