测量二维图形面积 by GeoGebra Institute of Hong Kong (2)

GeoGebra 命令及参数

1. Segment(X0, X0 + (0, 0.25)) → g
2. Segment(X0, X0 + (0, mark)) → h
3. Segment(X0 + (1, 0), X0 + (1, mark)) → i
4. Vector(X0 + (0, mark / 2), X0 + (1, mark / 2)) → u
5. Vector(X0 + (1, mark / 2), X0 + (0, mark / 2)) → v
6. Segment(Y0 - (mark, 0), Y0) → j
7. Segment(Y0 - (mark, 1), Y0 - (0, 1)) → k
8. Vector(Y0 - (mark / 2, 1), Y0 - (mark / 2, 0)) → w
9. Vector(Y0 - (mark / 2, 0), Y0 - (mark / 2, 1)) → z
10. Segment((3, -1), (3, 3)) → l
11. Point(yAxis) → A
12. Intersect(xAxis, yAxis) → B
13. Point(xAxis) → C
14. Point(xAxis) → E
15. Point(yAxis) → F
16. Rotate(A, (-180° * t1), D) → A'
17. Rotate(F, (-180° * t1), D) → F'
18. Rotate(D, (-180° * t1), D) → D'
19. Polygon(A', F', D') → poly1, d', a', f'
20. Rotate(C, (180° * t2), D) → C'
21. Rotate(D, (180° * t2), D) → D'_1
22. Rotate(E, (180° * t2), D) → E'
23. Polygon(C', D'_1, E') → poly2, e', c', d'_1
24. Polygon(A', F', D') → poly1', d'_2, a'_1, f'_1
25. Polygon(C', D'_1, E') → poly2', e'_1, c'_1, d'_3
26. Polygon(B, E, D, F) → poly3, b, e, d, f
27. Polygon(A, B, C) → poly4, c, a, b_1
28. Polygon(A, F, D, E, C) → poly5, a_1, f_1, d_1, e_1, c_1