15边形的面积与周长为180

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Point(xAxis) → B
3. Vector(A, C) → u
4. Polygon(A, B, 15) → poly1, b, l, m, n, p, q, r, D, E, F, G, c, H, I, J, K, L, M, N, O, P, d, e, g, h, i, j, k
5. LineBisector(l) → s
6. LineBisector(g) → t
7. Intersect(s, t) → Q
8. Polygon(A, Q, B) → poly2, b_1, a_1, q_1
9. Segment(P, Q) → c_1
10. Segment(O, Q) → d_1
11. Segment(N, Q) → e_1
12. Segment(M, Q) → f_1
13. Segment(L, Q) → g_1
14. Segment(K, Q) → h_1
15. Segment(J, Q) → i_1
16. Segment(I, Q) → j_1
17. Segment(H, Q) → k_1
18. Segment(G, Q) → l_1
19. Segment(F, Q) → m_1
20. Segment(E, Q) → n_1
21. Segment(D, Q) → p_1
22. Translate(A, u) → A'
23. Translate(Q, u) → Q'
24. Translate(B, u) → B'
25. Polygon(A', Q', B') → poly2', b', a', q'
26. Angle(A, Q, B) → α
27. OrthogonalLine(Q', q') → r_1
28. Intersect(f, r_1, 1) → R
29. Segment(Q', R) → s_1
30. Angle(C, Q', R) → β
31. Angle(Q', R, C) → γ
32. PointIn(poly1) → Pointpoly1