Nets of Solids

Nets of Solids
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2016-04-16 18:13
This GeoGebra example demonstrates the construction and dynamic visualization of nets of solids (such as prisms and pyramids), showing how a 3D solid's surface unfolds into a flat polygon net. It illustrates the transition between a three-dimensional solid and its two-dimensional net through rotation and translation. Core mathematical concepts include solid geometry, surface area, nets, 3D-to-2D projection, and geometric transformations such as translation, reflection, and rotation. The construction uses GeoGebra commands including Vector, Translate, OrthogonalLine, Polygon, Midpoint, Segment, and Mirror, along with 3D view (View3D) and parameters like sinphi, cosphi, sintheta, costheta to control viewing angles)Skip. This resource is suitable for middle and high school geometry classes, helping students understand how solid surfaces are composed and how they unfold, and is ideal for interactive math exploration and classroom demonstrations.

GeoGebra Commands & Parameters

  1. Vector(B_1, Z) → w
  2. Vector(B_1, Y) → v
  3. Vector(B_1, X) → u
  4. Translate(A, Vector[(2 * v)]) → A'
  5. Translate(P, Vector[(2 * v)]) → P'
  6. OrthogonalLine(View3D, yAxis) → a_1
  7. OrthogonalLine(View3D, xAxis) → b_1
  8. Polygon(L, K, N, M) → poly1, l, k_1, n, m
  9. Polygon(K, P, Q, N) → poly2, k_2, p, q, n_1
  10. Polygon(L, M, S, R) → poly3, l_1, m_1, s, r
  11. Polygon(N, V, W, M) → poly4, n_2, v_1, w_1, m_2
  12. Polygon(K, T, U, L) → poly5, k_3, t, u_1, l_2
  13. Polygon(B, Q, P, A) → poly6, b_2, q_1, p_1, a_2
  14. Midpoint(R, M) → D
  15. Translate(S, Vector[(-((2 * v)))]) → S'
  16. Segment(S, C) → e
  17. Translate(M, Vector[(-2 * v)]) → M'
  18. Segment(M, E) → f
  19. Segment(E, C) → h
  20. Translate(N, Vector[(-2 * v)]) → N'
  21. Translate(Q, Vector[(-2 * v)]) → Q'_1
  22. Segment(Q, F) → i
  23. Segment(N, G) → j
  24. Segment(G, F) → d_1
  25. Translate(Q, Vector[(-2 * v)]) → Q'_2
  26. Translate(B, Vector[(-2 * v)]) → B'_1
  27. Segment(B, I) → e_1
  28. Segment(I, H) → f_1
  29. Segment(H, Q) → g_1
  30. Translate(K, Vector[(2 * v)]) → K'
  31. Translate(P, Vector[(2 * v)]) → P'_1
  32. Segment(P, J) → h_1
  33. Segment(J, A_1) → i_1
  34. Segment(A_1, K) → j_1
  35. Segment(B, H_1) → s_1
  36. Segment(H_1, C_1) → c
  37. Segment(C_1, A) → r_1
  38. Midpoint(N, P) → D_1
  39. Midpoint(k_1) → F_1
  40. Segment(A, G_1) → t_1
  41. Segment(G_1, I_1) → c_2
  42. Segment(I_1, P) → d_2
  43. Segment(J, K_1) → f_2
  44. Segment(P, L_1) → e_2
  45. Segment(L_1, K_1) → g_2
  46. Segment(M, W) → h_2
  47. Mirror(L_1, F_1) → O_1
  48. Mirror(K_1, F_1) → P_1
  49. Segment(M, M_1) → i_2
  50. Segment(N_1, J_1) → j_2
  51. Segment(J_1, M_1) → p_2
  52. Polygon(M, E, C, S) → poly7, q_2, r_2, s_2, t_2
  53. Polygon(Q, N, G, F) → poly8, q_3, n_3, g_3, f_3
  54. Polygon(B, Q, H, I) → poly9, b_3, q_4, h_3, i_3
  55. Polygon(J, A_1, K, P) → poly10, j_3, a_3, k_4, p_3
  56. Polygon(C_1, A, B, H_1) → poly11, c_3, a_4, b_4, h_4
  57. Polygon(G_1, I_1, P, A) → poly12, g_4, i_4, p_4, a_5
  58. Polygon(K_1, J, P, L_1) → poly13, k_5, j_4, p_5, l_3
  59. Polygon(M, M_1, J_1, N_1) → poly14, m_3, m_4, j_5, n_4

AI Drawing Prompt Reference

Create a 3D prism and its corresponding 2D net, showing how the solid's surface unfolds into a flat polygon net. The prism has multiple faces (base and lateral sides) colored distinctly, and the net is laid out flat with connected edges. Include auxiliary segments, midpoints, and mirrored shapes to illustrate geometric transformations during unfolding. The composition should clearly show the correspondence between the 3D solid and its 2D net, with key vertices and edges labeled.
The prompt above was compiled from the original drawing commands and is for reference only.