八边形面积计算（边长=6）

GeoGebra 命令及参数

1. Polygon(A, B, 8) → poly1, a, D, E, F, G, H, b, c, d, e, f, g, h, C
2. LineBisector(e) → i
3. LineBisector(h) → j
4. Intersect(i, j) → I
5. Polygon(A, I, B) → poly2, b_1, a_1, i_1
6. Point(xAxis) → J
7. Vector(A, J) → u
8. Translate(A, u) → A'
9. Translate(I, u) → I'
10. Translate(B, u) → B'
11. Polygon(A', I', B') → poly2', b', a', i'
12. Angle(A, I, B) → α
13. Segment(H, I) → k
14. Segment(I, G) → l
15. Segment(I, F) → m
16. Segment(I, E) → n
17. Segment(I, D) → p
18. Segment(I, C) → q
19. OrthogonalLine(I', i') → r
20. Intersect(r, i') → K
21. Segment(I', K) → s
22. Angle(J, I', K) → β
23. Angle(I', K, J) → γ
24. PointIn(poly2') → Pointpoly2'
25. PointIn(poly1) → Pointpoly1_1
26. PointIn(poly1) → Pointpoly1_2
27. PointIn(poly1) → Pointpoly1