不规则多边形周长

GeoGebra 命令及参数

1. Line(A, xAxis) → f
2. Line(A, yAxis) → g
3. Point(g) → B
4. Line(B, xAxis) → h
5. Point(f) → C
6. Line(C, yAxis) → i
7. Intersect(xAxis, yAxis) → D
8. Intersect(h, yAxis) → E
9. Intersect(i, xAxis) → F
10. Point(i) → J
11. Line(J, xAxis) → j
12. Intersect(j, yAxis) → H
13. Intersect(xAxis, yAxis) → I
14. Intersect(i, xAxis) → K
15. Intersect(h, i) → L
16. Polygon(H, J, L, B, A, C, K, I) → poly1, h_1, j_1, l, b, a, c, k, i_1
17. Intersect(h_1, i_1) → G
18. Intersect(h, i) → M
19. Intersect(l, b) → N
20. Segment(M, N) → n
21. Intersect(k, i_1) → O
22. Segment(J, M) → r
23. Intersect(h_1, i_1) → Q
24. Segment(O, Q) → t
25. Point(c) → R
26. Segment(R, O) → p
27. Segment(H, J) → m