周长与面积关系探索

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. OrthogonalLine(A, xAxis) → a
3. OrthogonalLine(A, a) → b
4. Point(Circle[A, abs(LengthConstantPerimeter)]) → E
5. Segment(A, E) → e
6. Point(Circle[A, abs(Width)]) → B
7. Segment(A, B) → d
8. OrthogonalLine(B, d) → f
9. OrthogonalLine(E, f) → g
10. Intersect(f, g) → C
11. Polygon(A, E, C, B) → poly1, a_1, e_1, c_1, b_1
12. Textfield(Perimeter) → inputBox1
13. Textfield(Area) → inputBox3
14. Intersect(xAxis, yAxis) → D
15. Segment(D, Point) → h
16. OrthogonalLine(Point, h) → j
17. Point(Circle[Point, abs(Area / LengthConstantArea)]) → F
18. Segment(Point, F) → k
19. OrthogonalLine(F, j) → l
20. Intersect(l, xAxis) → G
21. Polygon(Point, D, G, F) → poly2, point, d_2, g_1, f_1
22. Intersect(xAxis, yAxis) → H
23. Point(xAxis) → I
24. Line(H, I) → n
25. Polygon(H, J, K, L) → poly3, h_2, j_1, k_2, l_1
26. Polygon(M, N, O, P) → poly4, m_1, n_1, o_1, p_1
27. Textfield(Perimeter) → inputBox4