Rotating Polyhedra and Functions

Rotating Polyhedra and Functions
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2023-04-07 04:45
This example demonstrates the dynamic relationship between rotating polyhedra and function graphs during rotation. It involves core math concepts like function graphs, polygon rotation, solid geometry, inequalities, and calculus. Construction highlights the use of commands such as Rotate, Point, Cylinder, Circle, Segment, Plane, OrthogonalPlane, Midpoint, Line, Mirror, Polygon, Center, and Intersect in GeoGebra. Suitable for high school students and math enthusiasts exploring spatial transformations and function properties.

GeoGebra Commands & Parameters

  1. Rotate(g, -90°, yAxis) → g_{1}
  2. Rotate(g_{1}, (-α), zAxis) → a
  3. Rotate(a, -90°, zAxis) → a'
  4. Rotate(a, -180°, zAxis) → a'_{1}
  5. Rotate(a, -270°, zAxis) → a'_{2}
  6. Point(zAxis) → A
  7. Point(zAxis) → B
  8. Cylinder(A, B, 0.2) → b, c, d, e
  9. Circle(B, 2.7, zAxis) → h
  10. Point(zAxis) → C
  11. Cylinder(C, A, 0.3) → f, k, p, i
  12. Point(h) → D
  13. Rotate(D, (-α), zAxis) → D'
  14. Rotate(D', -90°, zAxis) → D''
  15. Rotate(D'', -90°, zAxis) → D'''
  16. Rotate(D''', -90°, zAxis) → E
  17. Segment(E, B) → j
  18. Segment(B, D''') → l
  19. Segment(B, D'') → m
  20. Segment(B, D') → n
  21. Point(zAxis) → F
  22. Point(zAxis) → G
  23. Point(zAxis) → H
  24. Point(zAxis) → I
  25. Cylinder(H, I, 0.3) → t, c_1, d_1, u
  26. Plane(D'', H, F) → p_1
  27. OrthogonalPlane(D'', m) → q_1
  28. Midpoint(H, B) → K
  29. Circle(K, 2.7, zAxis) → e_1
  30. Point(e_1) → J
  31. Segment(K, J) → f_1
  32. OrthogonalPlane(J, f_1) → r_1
  33. Line(J, xAxis) → h_1
  34. Circle(J, 1.2, h_1) → k_1
  35. Point(k_1) → L
  36. Point(f_1) → M
  37. Mirror(L, r_1) → L'
  38. Mirror(M, r_1) → M'
  39. Polygon(L, M, M', L') → q1, l_1, m_1, m', l'
  40. Rotate(q1, 90°, f_1) → q1'
  41. Rotate(q1, -10°, f_1) → q1'_{1}
  42. Rotate(L', 90°, f_1) → L''
  43. Rotate(L, 90°, f_1) → L'_{1}
  44. Rotate(L, -10°, f_1) → L'_{2}
  45. Rotate(L', -10°, f_1) → L''_{1}
  46. Midpoint(L'_{2}, M) → N
  47. Midpoint(L''_{1}, M') → O
  48. Segment(N, L'_{1}) → i_1
  49. Segment(O, L'') → j_1
  50. Rotate(N, 90°, zAxis) → N'
  51. Rotate(L'_{1}, 90°, zAxis) → P
  52. Rotate(O, 90°, zAxis) → O'
  53. Rotate(L'', 90°, zAxis) → L'''
  54. Rotate(N', 90°, zAxis) → N''
  55. Rotate(P, 90°, zAxis) → P'
  56. Rotate(O', 90°, zAxis) → O''
  57. Rotate(L''', 90°, zAxis) → Q
  58. Rotate(O'', 90°, zAxis) → O'''
  59. Rotate(Q, 90°, zAxis) → Q'
  60. Rotate(N'', 90°, zAxis) → N'''
  61. Rotate(P', 90°, zAxis) → P''
  62. Center(c_1) → R
  63. Cylinder(R, I, 0.3) → v, c_2, d_2, w
  64. Midpoint(I, F) → S
  65. Cylinder(I, S, 0.2) → o, q, r, s
  66. Cylinder(S, F, 1) → o_1, e_2, g_2, u_1
  67. Point(h) → T
  68. Line(T, zAxis) → h_2
  69. Point(h_1) → U
  70. Line(U, h_2) → i_2
  71. Point(e_1) → V
  72. Segment(V, U) → j_2
  73. Point(i_2) → W
  74. Circle(W, 0.5, i_2) → k_2
  75. Line(W, yAxis) → l_2
  76. Intersect(l_2, k_2, 1) → Z
  77. Intersect(l_2, k_2, 2) → A_1
  78. Segment(W, U) → m_2
  79. Segment(Z, A_1) → n_2
  80. Rotate(W, 90°, zAxis) → W'
  81. Rotate(U, 90°, zAxis) → U'
  82. Rotate(Z, 90°, zAxis) → Z'
  83. Rotate(A_1, 90°, zAxis) → B_1
  84. Rotate(W', 90°, zAxis) → W''
  85. Rotate(U', 90°, zAxis) → U''
  86. Rotate(V, 90°, zAxis) → V'
  87. Rotate(U, 90°, zAxis) → U'_{1}
  88. Rotate(Z', 90°, zAxis) → Z''
  89. Rotate(B_1, 90°, zAxis) → C_1
  90. Rotate(V', 90°, zAxis) → V''
  91. Rotate(U'_{1}, 90°, zAxis) → D_1
  92. Rotate(W'', 90°, zAxis) → W'''
  93. Rotate(U'', 90°, zAxis) → U'''
  94. Rotate(Z'', 90°, zAxis) → Z'''
  95. Rotate(C_1, 90°, zAxis) → E_1
  96. Rotate(V'', 90°, zAxis) → V'''
  97. Rotate(D_1, 90°, zAxis) → F_1
  98. Rotate(q1'_{1}, (-(α + 45°)), zAxis) → q2
  99. Rotate(q1', (-(α + 45°)), zAxis) → q1''
  100. Rotate(Z, (-(α + 45°)), zAxis) → Z'_{1}
  101. Rotate(A_1, (-(α + 45°)), zAxis) → G_1
  102. Segment(Z'_{1}, G_1) → n_1
  103. Rotate(W, (-(α + 45°)), zAxis) → W'_{1}
  104. Rotate(U, (-(α + 45°)), zAxis) → U'_{2}
  105. Segment(W'_{1}, U'_{2}) → s_1
  106. Rotate(N, (-(α + 45°)), zAxis) → N'_{1}
  107. Rotate(L'_{1}, (-(α + 45°)), zAxis) → H_1
  108. Segment(N'_{1}, H_1) → a_1
  109. Rotate(O, (-(α + 45°)), zAxis) → O'_{1}
  110. Rotate(L'', (-(α + 45°)), zAxis) → L'''_{1}
  111. Segment(O'_{1}, L'''_{1}) → b_1
  112. Rotate(V, (-(α + 45°)), zAxis) → V'_{1}
  113. Rotate(U, (-(α + 45°)), zAxis) → U'_{3}
  114. Segment(V'_{1}, U'_{3}) → f_2
  115. Rotate(q2, -90°, zAxis) → q2'
  116. Rotate(q2, -180°, zAxis) → q2'_{1}
  117. Rotate(q2, -270°, zAxis) → q2'_{2}
  118. Rotate(q1'', -90°, zAxis) → q1'''
  119. Rotate(q1'', -180°, zAxis) → q1'''_{1}
  120. Rotate(q1'', -270°, zAxis) → q1'''_{2}
  121. Rotate(N'_{1}, -180°, zAxis) → I_1
  122. Rotate(H_1, -180°, zAxis) → J_1
  123. Segment(I_1, J_1) → t_1
  124. Rotate(N'_{1}, -270°, zAxis) → K_1
  125. Rotate(H_1, -270°, zAxis) → L_1
  126. Segment(K_1, L_1) → p_2
  127. Rotate(O'_{1}, -90°, zAxis) → M_1
  128. Rotate(L'''_{1}, -90°, zAxis) → N_1
  129. Segment(M_1, N_1) → q_2
  130. Rotate(O'_{1}, -180°, zAxis) → O_1
  131. Rotate(L'''_{1}, -180°, zAxis) → P_1
  132. Segment(O_1, P_1) → r_2
  133. Rotate(O'_{1}, -270°, zAxis) → Q_1
  134. Rotate(L'''_{1}, -270°, zAxis) → R_1
  135. Segment(Q_1, R_1) → s_2
  136. Rotate(Z'_{1}, -90°, zAxis) → S_1
  137. Rotate(G_1, -90°, zAxis) → T_1
  138. Segment(S_1, T_1) → t_2
  139. Rotate(N'_{1}, -90°, zAxis) → U_1
  140. Rotate(H_1, -90°, zAxis) → V_1
  141. Segment(U_1, V_1) → a_2
  142. Rotate(Z'_{1}, -90°, zAxis) → W_1
  143. Rotate(G_1, -90°, zAxis) → Z_1
  144. Segment(W_1, Z_1) → b_2
  145. Rotate(Z'_{1}, -180°, zAxis) → A_2
  146. Rotate(G_1, -180°, zAxis) → B_2
  147. Segment(A_2, B_2) → f_3
  148. Rotate(Z'_{1}, -270°, zAxis) → C_2
  149. Rotate(G_1, -270°, zAxis) → D_2
  150. Segment(C_2, D_2) → g_3
  151. Rotate(W'_{1}, -90°, zAxis) → E_2
  152. Rotate(U'_{2}, -90°, zAxis) → F_2
  153. Segment(E_2, F_2) → h_3
  154. Rotate(W'_{1}, -180°, zAxis) → G_2
  155. Rotate(U'_{2}, -180°, zAxis) → H_2
  156. Segment(G_2, H_2) → i_3
  157. Rotate(W'_{1}, -270°, zAxis) → I_2
  158. Rotate(U'_{2}, -270°, zAxis) → J_2
  159. Segment(I_2, J_2) → j_3
  160. Rotate(V'_{1}, -90°, zAxis) → K_2
  161. Rotate(U'_{3}, -90°, zAxis) → L_2
  162. Segment(K_2, L_2) → k_3
  163. Rotate(V'_{1}, -180°, zAxis) → M_2
  164. Rotate(U'_{3}, -180°, zAxis) → N_2
  165. Segment(M_2, N_2) → l_3
  166. Rotate(V'_{1}, -270°, zAxis) → O_2
  167. Rotate(U'_{3}, -270°, zAxis) → P_2
  168. Segment(O_2, P_2) → m_3

AI Drawing Prompt Reference

Create a 3D-style figure showing a rotating polyhedral effect built from circles, segments, cylinders, and a closed polygon. Use the given vertical/space axes as references; place multiple points on the axes to serve as cylinder endpoints, then construct several thin cylinders to represent solid parts. Add circle traces on the space axis (with specified radii) and connect key axis points using segments. Define additional key points by rotating the circle point(s) around the space axis through several angles so they appear in multiple orientations, and use mirror symmetry to produce reflected points. Finally, form a closed polygon from the rotated and mirrored points, and use midpoints plus auxiliary perpendicular planes/sections to draw guiding intersection/segment lines that visually change as the structure rotates.
The prompt above was compiled from the original drawing commands and is for reference only.