有理数加减法

GeoGebra 命令及参数

1. Point(h) → E
2. Point(t) → F
3. Segment(E, F) → e
4. Point(h) → G
5. Point(t) → H
6. Segment(G, H) → i
7. Intersect(h, e, (1.0000000000000007, 0.5)) → I
8. Intersect(t, e, (1.0077583915814285, 0)) → J
9. Intersect(t, i, (2, 0)) → K
10. Intersect(h, i, (2, 0.5)) → L
11. Polygon(I, J, K, L) → poly1, i_1, j, k, l
12. Intersect(xAxis, yAxis) → A
13. Polygon(N, O, P, Q) → poly2, n_1, o, p_1, q
14. Polygon(Q, R, S, P) → poly3, q_1, r, s, p_2
15. Textfield(m) → InputBox1
16. Polygon(N, R, T, U) → poly4, n, r_1, t_1, u
17. Polygon(O, V, W, S) → poly5, o_1, v, w, s_1
18. Polygon(V, Z, A_1, W) → poly6, v_1, z_1, a_1, w_1
19. Vector(B, B_1) → p
20. Segment(B_1, M) → d
21. Vector(M, C) → u_1
22. Segment(A, B) → f_1
23. Segment(C, F) → g_1