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Find Angle and Area

Find Angle and Area
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2016-02-14 13:01
AngleTrigonometryCoordinate Geometry
This example demonstrates how to find the angle and area in a given geometric figure using GeoGebra. Key mathematical concepts include trigonometry and coordinate geometry. By utilizing commands such as Textfield, Circle, Intersect, Rotate, Angle, Segment, CircleArc, AngularBisector, and CircleSector, complex geometric shapes can be constructed and accurately measured. Suitable for high school mathematics education, particularly in trigonometry and coordinate geometry courses.

GeoGebra Commands & Parameters

  1. Textfield(r) → InputBox1
  2. Textfield(l) → InputBox2
  3. Circle(A, 2) → c
  4. Intersect(c, a, 2) → B
  5. Rotate(B, d°, A) → B'
  6. Angle(B, A, B') → α
  7. Segment(A, B) → b
  8. Segment(A, B') → e
  9. CircleArc(A, B, B') → f
  10. AngularBisector(B, A, B') → g
  11. Intersect(c, f, 1) → C
  12. Intersect(c, g) → D, E
  13. CircleSector(A, B, B') → h