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Tetris Geometric Models

Tetris Geometric Models
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2019-05-08 08:48
PolygonTrigonometryCoordinate GeometrySolid GeometryGeometric Construction
This example demonstrates 3D geometric models constructed with GeoGebra, including various polygon and solid shape combinations, suitable for 3D printing. It involves core math concepts like solid geometry, polygon construction, fractions, cosine theorem, and plane figures. Key GeoGebra commands used include Intersect, Polygon, Midpoint, Segment, Point, and Circle. Ideal for high school and above students learning solid geometry and 3D modeling design.

GeoGebra Commands & Parameters

  1. Intersect(xAxis, yAxis) → A
  2. Polygon(A, B, 4) → poly1, f, g, h, i, C, D
  3. Midpoint(D, A) → E
  4. Midpoint(A, B) → F
  5. Midpoint(B, C) → G
  6. Midpoint(C, D) → H
  7. Midpoint(H, D) → I
  8. Midpoint(D, E) → J
  9. Midpoint(E, A) → K
  10. Midpoint(A, F) → L
  11. Midpoint(F, B) → M
  12. Midpoint(B, G) → N
  13. Midpoint(G, C) → O
  14. Midpoint(C, H) → P
  15. Segment(I, L) → j
  16. Segment(H, F) → k
  17. Segment(P, M) → l
  18. Segment(J, O) → m
  19. Segment(E, G) → n
  20. Segment(K, N) → p
  21. Polygon(A, L, 4) → poly2, q, r, s, t, Q, R
  22. Polygon(F, M, 4) → poly3, a, b, c, d, S, T
  23. Polygon(Q, T, 4) → poly4, e, f_1, g_1, h_1, U, V
  24. Polygon(E, V, 4) → poly5, i_1, j_1, k_1, l_1, W, Z
  25. Polygon(I, W, 4) → poly6, m_1, n_1, p_1, q_1, A_1, B_1
  26. Polygon(A_1, U, 4) → poly7, r_1, s_1, t_1, a_1, C_1, D_1
  27. Polygon(C_1, S, 4) → poly8, b_1, c_1, d_1, e_1, E_1, F_1
  28. Polygon(P, D_1, 4) → poly9, f_2, g_2, h_2, i_2, G_1, H_1
  29. Point(Circle[I_1, 2]) → J_1
  30. Segment(I_1, J_1) → j_2
  31. Midpoint(j_2) → K_1
  32. Polygon(I_1, K_1, 4) → whiteS2, k_2, l_2, m_2, n_2, L_1, M_1
  33. Polygon(K_1, J_1, 4) → poly11, p_2, q_2, r_2, s_2, N_1, O_1
  34. Polygon(L_1, N_1, 4) → whiteS1, t_2, a_2, b_2, c_2, P_1, Q_1
  35. Polygon(P_1, N_1, 4) → poly13, d_2, e_2, f_3, g_3, R_1, S_1
  36. Polygon(I_1, J_1, N_1, R_1, S_1, Q_1, L_1, M_1) → Sborder_0, i_3, j_3, n_3, r_3, s_3, q_3, l_3, m_3
  37. Polygon(M_1, I_1, J_1, N_1, R_1, S_1, Q_1, L_1) → Sborder_2, m_4, i_4, j_4, n_4, r_4, s_4, q_4, l_4
  38. Segment(L_1, K_1) → h_3
  39. Segment(P_1, N_1) → k_3
  40. Segment(L_1, N_1) → p_3
  41. Point(Circle[T_1, 2]) → U_1
  42. Segment(T_1, U_1) → t_3
  43. Midpoint(t_3) → V_1
  44. Polygon(T_1, V_1, 4) → poly10, a_3, b_3, c_3, d_3, W_1, Z_1
  45. Polygon(V_1, U_1, 4) → whiteL1, e_3, f_4, g_4, h_4, A_2, B_2
  46. Polygon(Z_1, W_1, 4) → whiteL2, k_4, p_4, t_4, a_4, C_2, D_2
  47. Polygon(D_2, C_2, 4) → poly15, b_4, c_4, d_4, e_4, E_2, F_2
  48. Polygon(F_2, T_1, U_1, A_2, W_1, E_2) → Lborder_0, f_5, t_5, u_1, a_5, w_1, e_5
  49. Segment(D_2, C_2) → g_5
  50. Segment(Z_1, W_1) → h_5
  51. Segment(W_1, V_1) → i_5
  52. Polygon(F_2, T_1, U_1, A_2, W_1, E_2) → Lborder_2, f_6, t_6, u_2, a_6, w_2, e_6
  53. Point(Circle[G_2, 3]) → H_2
  54. Segment(G_2, H_2) → j_5
  55. Circle(G_2, 1) → c_5
  56. Circle(H_2, 1) → d_5
  57. Intersect(c_5, j_5, 1) → I_2
  58. Intersect(d_5, j_5, 1) → J_2
  59. Polygon(G_2, I_2, 4) → poly14, k_5, l_5, m_5, n_5, K_2, L_2
  60. Polygon(I_2, J_2, 4) → whiteT1, p_5, q_5, r_5, s_5, M_2, N_2
  61. Polygon(J_2, H_2, 4) → poly17, b_5, g_6, h_6, i_6, O_2, P_2
  62. Polygon(K_2, M_2, 4) → poly18, j_6, k_6, l_6, m_6, Q_2, R_2
  63. Polygon(G_2, H_2, O_2, M_2, Q_2, R_2, K_2, L_2) → Tborder_0, g_7, h_7, o_2, m_7, q_6, r_6, k_7, l_7
  64. Segment(K_2, I_2) → n_6
  65. Segment(K_2, M_2) → p_6
  66. Segment(M_2, J_2) → s_6
  67. Polygon(G_2, H_2, O_2, M_2, Q_2, R_2, K_2, L_2) → Tborder_2, g_8, h_8, o_1, m_8, q_7, r_7, k_8, l_8
  68. Point(Circle[S_2, 4]) → T_2
  69. Segment(S_2, T_2) → b_6
  70. Midpoint(b_6) → U_2
  71. Midpoint(S_2, U_2) → V_2
  72. Midpoint(U_2, T_2) → W_2
  73. Polygon(S_2, V_2, 4) → whiteI1, c_6, d_6, f_7, i_7, Z_2, A_3
  74. Polygon(V_2, U_2, 4) → poly19, j_7, n_7, p_7, s_7, B_3, C_3
  75. Polygon(U_2, W_2, 4) → whiteI2, t_7, a_7, b_7, c_7, D_3, E_3
  76. Polygon(W_2, T_2, 4) → Iborder_1, d_7, e_7, f_8, i_8, F_3, G_3
  77. Polygon(A_3, S_2, T_2, F_3) → Iborder_0, a_8, s_8, t_8, f_9
  78. Segment(Z_2, V_2) → j_8
  79. Segment(B_3, U_2) → n_8
  80. Segment(D_3, W_2) → p_8
  81. Polygon(A_3, S_2, T_2, F_3) → Iborder_2, a_9, s_9, t_9, f_{10}