多边形面积的测量与计算

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. Point(yAxis) → A
11. Point(xAxis) → B
12. Point(xAxis) → C
13. Point(xAxis) → E
14. Translate(A, Vector[(t1 * Vector[A, D])]) → A'
15. Translate(B, Vector[(t1 * Vector[A, D])]) → B'
16. Translate(F, Vector[(t1 * Vector[A, D])]) → F'
17. Polygon(A', B', F') → poly1, f', a', b'
18. Translate(C, Vector[(t2 * Vector[D, A])]) → C'
19. Translate(D, Vector[(t2 * Vector[D, A])]) → D'
20. Translate(E, Vector[(t2 * Vector[D, A])]) → E'
21. Polygon(C', D', E') → poly2, e', c', d'
22. Polygon(A', B', F') → poly1', f'_1, a'_1, b'_1
23. Polygon(C', D', E') → poly2', e'_1, c'_1, d'_1
24. Polygon(B, E, D, F) → poly3, b, e, d, f
25. Polygon(A, B, C, D) → poly4, a, b_1, c, d_1
26. Polygon(A, B, F) → poly5, f_1, a_1, b_2
27. Polygon(C, D, E) → poly6, e_1, c_1, d_2