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Exploration of Basic Transformations by Muhammad Fakhri bin Ramley

Exploration of Basic Transformations by Muhammad Fakhri bin Ramley
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2015-11-06 15:36
Probability & StatisticsTransformationGeometric Construction
This example illustrates four basic transformations: reflection, rotation, enlargement, and translation. Using GeoGebra commands such as Polygon, Dilate, Translate, etc., it provides a visual understanding of these transformations. Suitable for students at junior high school level and above.

GeoGebra Commands & Parameters

  1. Polygon(C, D, B) → poly1, b, c, d
  2. Dilate(C, a, A) → C'_1
  3. Dilate(D, a, A) → D'_1
  4. Dilate(B, a, A) → B'_1
  5. Polygon(C'_1, D'_1, B'_1) → poly1'_1, b', c', d'
  6. Ray(A, C) → e
  7. Ray(A, B) → f
  8. Ray(A, D) → g
  9. Translate(C, Vector[(horz, vert)]) → C'_2
  10. Translate(D, Vector[(horz, vert)]) → D'_2
  11. Translate(B, Vector[(horz, vert)]) → B'_2
  12. Polygon(C'_2, D'_2, B'_2) → poly1'_2, b'_1, c'_1, d'_1
  13. Vector(C, C'_2) → u
  14. Vector(B, B'_2) → v
  15. Vector(D, D'_2) → w
  16. Rotate(C, -α, A) → C'_3
  17. Rotate(D, -α, A) → D'_3
  18. Rotate(B, -α, A) → B'_3
  19. Polygon(C'_3, D'_3, B'_3) → poly1'_3, b'_2, c'_2, d'_2
  20. Point(xAxis) → E
  21. Line(F, E) → h
  22. Mirror(C, h) → C'
  23. Mirror(D, h) → D'
  24. Mirror(B, h) → B'
  25. Polygon(C', D', B') → poly1', b'_3, c'_3, d'_3
  26. Vector(A, G) → z
  27. Angle(G, A, H) → β