三角形作图练习

GeoGebra 命令及参数

1. Segment(A, B) → a
2. Point(a) → C
3. Point(a) → E
4. Polygon(C, D, E) → poly1, e, c, d
5. Textfield() → InputBox1
6. Mirror(C, a) → C'
7. Mirror(C, a) → C'_1
8. Mirror(C, a) → C'_2
9. Mirror(E, a) → E'
10. Mirror(C, a) → C'_3
11. Point(a) → N
12. Polygon(E, M, N) → poly12, n, e_3, m
13. Polygon(C, H, E, E') → poly2, c_1, h, e_1, e'
14. Polygon(E, I, N) → poly3, n_1, e_2, i
15. Point(c) → K
16. Point(n_1) → L
17. Point(n) → O
18. Point(h) → P
19. Polygon(J, K, L, O, P) → poly4, j, k, l, o, p