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Introduction to Rotations: Positive and Negative Angles

Introduction to Rotations: Positive and Negative Angles
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2016-06-26 11:19
AngleTransformationGeometric Construction
This example introduces the basic concept of rotations, including rotations with positive and negative angles. Key mathematical concepts include angles and rotations. Using GeoGebra commands such as Rotate, Segment, Circle, etc., the effect of rotations can be visually demonstrated. Suitable for students at the junior high school level and above to learn geometric transformations.

GeoGebra Commands & Parameters

  1. Distance(A, B) → d
  2. Rotate(B, α, A) → C
  3. Segment(A, B) → f
  4. Segment(A, C) → g
  5. Circle(A, (0.2 * f)) → c
  6. Intersect(c, f) → C_1,
  7. Intersect(c, g) → D,
  8. CircleSector(A, C_1, D) → h
  9. CircleSector(A, B, C) → k
  10. CircleSector(A, D, C_1) → p
  11. CircleSector(A, C, B) → q
  12. Circle(A, B) → r