Equilateral Triangle Transformations

Equilateral Triangle Transformations
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2022-10-11 03:20
This example demonstrates transformations of an equilateral triangle, involving key mathematical concepts such as properties of equilateral triangles, rotation, and dilation. Using GeoGebra commands like Polygon, Dilate, and Rotate, it dynamically shows how an equilateral triangle changes under different transformations. Suitable for middle school and above students and teachers to understand the basic principles of geometric transformations.

GeoGebra Commands & Parameters

  1. Polygon(A, B, 3) → poly1, f, g, h, C
  2. Polygon(D, E, 3) → poly2, i, j, k, F
  3. Dilate(A, If[0 < a ≤ 1, 1 - a, 0], B) → A'
  4. Dilate(D, If[0 < a ≤ 1, 1 - a, 0], E) → D'
  5. Segment(A, A') → l
  6. Segment(D, D') → m
  7. Rotate(B, If[1 < a ≤ 2, ((a - 1) * pi / 3), pi / 3], A) → B'
  8. Rotate(E, If[1 < a ≤ 2, ((a - 1) * pi / 3), pi / 3], D) → E'
  9. Segment(A, B') → n
  10. Segment(D, E') → p
  11. Rotate(A, If[2 < a ≤ 3, ((a - 2) * pi / 3), pi / 3], C) → A'_{1}
  12. Rotate(D, If[2 < a ≤ 3, ((a - 2) * pi / 3), pi / 3], F) → D'_{1}
  13. Segment(C, A'_{1}) → q
  14. Segment(F, D'_{1}) → r
  15. Midpoint(A, D) → G
  16. Midpoint(B, E) → H
  17. Midpoint(C, F) → I
  18. Dilate(C, If[4 < a ≤ 5, 5 - a, 0], I) → C'
  19. Segment(C, C') → s
  20. Dilate(I, If[5 < a ≤ 6, 6 - a, 0], F) → I'
  21. Segment(I, I') → t
  22. Rotate(C, If[6 < a ≤ 7, ((a - 6) * pi), pi], I) → C'_{1}
  23. Segment(I, C'_{1}) → b
  24. Polygon(G, H, I) → t1, i_1, g_1, h_1
  25. Dilate(A, If[7 < a ≤ 8, 8 - a, 0], G) → A'_{2}
  26. Segment(A, A'_{2}) → c
  27. Dilate(G, If[8 < a ≤ 9, 9 - a, 0], D) → G'
  28. Segment(G, G') → d
  29. Rotate(A, If[9 < a ≤ 10, ((a - 9) * pi), pi], G) → A'_{3}
  30. Segment(G, A'_{3}) → e
  31. Dilate(B, If[10 < a ≤ 11, 11 - a, 0], H) → B'_{1}
  32. Segment(B, B'_{1}) → f_1
  33. Dilate(H, If[11 < a ≤ 12, 12 - a, 0], E) → H'
  34. Segment(H, H') → j_1
  35. Rotate(B, If[12 < a ≤ 13, ((a - 12) * pi), pi], H) → B'_{2}
  36. Segment(H, B'_{2}) → k_1
  37. Dilate(G, If[14 < a ≤ 15, 15 - a, 0], H) → G'_{1}
  38. Segment(G, G'_{1}) → l_1
  39. Rotate(H, If[15 < a ≤ 16, ((a - 15) * pi / 3), pi / 3], G) → H'_{1}
  40. Segment(G, H'_{1}) → m_1
  41. Rotate(G, If[16 < a ≤ 17, ((a - 16) * pi / 3), pi / 3], I) → G'_{2}
  42. Segment(I, G'_{2}) → n_1

AI Drawing Prompt Reference

This graphic shows an equilateral triangle and its transformed points. First, two equilateral triangles are drawn. Then, each vertex is scaled and rotated to generate new points. Lines are connected between these points and the original points. Finally, a triangle formed by the midpoints of the corresponding vertices is drawn. The whole graphic dynamically demonstrates transformation relationships of equilateral triangles, suitable for geometric teaching.
The prompt above was compiled from the original drawing commands and is for reference only.