Angle Bisector Construction by Jason Wofsey

Angle Bisector Construction by Jason Wofsey
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2016-04-25 10:53
This example demonstrates how to construct an angle bisector using GeoGebra, involving core math concepts like angles, rays, points, and the definition of an angle bisector. Key GeoGebra commands/objects used include Rotate, Angle, Ray, Point, and AngularBisector, as outlined in the construction summary. It is suitable for middle school and above students for understanding and practicing geometric constructions.

GeoGebra Commands & Parameters

  1. Rotate(B, α, A) → B'
  2. Angle(B, A, B') → β
  3. Ray(A, B') → b
  4. Ray(A, B) → d
  5. Point(d) → C
  6. AngularBisector(B, A, B') → target1
  7. Point(target1) → D
  8. Ray(A, D) → target2

AI Drawing Prompt Reference

Construct an angle bisector. First, rotate point B around point A by angle α to get point B'. Then, measure the angle BAB' to get β. Next, draw a ray b from A to B', and a ray d from A to B. Take a point C on ray d. Then, draw the angle bisector of angle BAB' to get point D on the bisector. Finally, draw a ray from A to D.
The prompt above was compiled from the original drawing commands and is for reference only.