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Exploring Rotation by 180 Degrees

Exploring Rotation by 180 Degrees
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2016-02-16 09:27
PolygonTrigonometrySolid GeometryTransformationGeometric Construction
In collections Geometry Transformations
This example demonstrates the transformation of a polygon after rotating it by 180 degrees, showcasing geometric transformations and polygon properties. Key math concepts include rotation, similarity transformation, and spatial geometry. The construction uses commands like Polygon and Rotate, along with objects such as A, E, D, C, B, and Angle. Suitable for high school students learning geometric transformations and solid geometry, helping develop spatial reasoning and understanding of rotational symmetry.

GeoGebra Commands & Parameters

  1. Polygon(A, E, D, C, B) → poly1, a, b, c, d, e
  2. Rotate(A, Angle°, F) → A'
  3. Rotate(E, Angle°, F) → E'
  4. Rotate(D, Angle°, F) → D'
  5. Rotate(C, Angle°, F) → C'
  6. Rotate(B, Angle°, F) → B'
  7. Polygon(A', E', D', C', B') → poly1', a', b', c', d', e'
  8. Rotate(A, 100°, G) → A'_2
  9. Rotate(E, 100°, G) → E'_1
  10. Rotate(D, 100°, G) → D'_1
  11. Rotate(C, 100°, G) → C'_2
  12. Rotate(B, 100°, G) → B'_2
  13. Polygon(A'_2, E'_1, D'_1, C'_2, B'_2) → poly1'_1, a'_1, b'_1, c'_1, d'_1, e'_1
  14. Rotate(A, 110°, H) → A'_3
  15. Rotate(E, 110°, H) → E'_3
  16. Rotate(D, 110°, H) → D'_3
  17. Rotate(C, 110°, H) → C'_3
  18. Rotate(B, 110°, H) → B'_3
  19. Polygon(A'_3, E'_3, D'_3, C'_3, B'_3) → poly1'_2, a'_2, b'_2, c'_2, d'_2, e'_2