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Drawing Angles of Any Magnitude

Drawing Angles of Any Magnitude
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2016-07-19 19:17
AngleGeometric ConstructionSlider Animation
This example demonstrates how to draw angles of any size. It involves concepts such as angle measurement and representation. Using GeoGebra commands like Circle, Intersect, Point, Angle, Segment, Mirror, etc., dynamic construction and display of angle changes are shown. Suitable for middle school and above students and teachers.

GeoGebra Commands & Parameters

  1. Circle(O, 1) → c
  2. Intersect(c, xAxis) → A, B
  3. Point(c) → C
  4. Angle(B, O, C) → θ
  5. Segment(O, C) → f
  6. Mirror(C, yAxis) → C'
  7. Segment(C', O) → g
  8. Angle(C', O, A) → β
  9. Mirror(C, xAxis) → C'_1
  10. Mirror(C', xAxis) → C''
  11. Segment(O, C'') → h
  12. Segment(O, C'_1) → i
  13. Angle(A, O, C'') → γ
  14. Angle(C'_1, O, B) → δ