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Angle Pairs

Angle Pairs
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2014-11-06 07:59
AngleGeometric ConstructionSlider Animation
In collections LAHS Angle Pairs
This is an example for teacher demonstration on angle pairs, including vertical angles and adjacent supplementary angles. Using GeoGebra commands such as Line, Intersect, Point, Ray, and Angle, the properties of angle pairs are visually demonstrated. Suitable for middle school and above mathematics education.

GeoGebra Commands & Parameters

  1. Line(A, B) → a
  2. Line(C, a) → b
  3. Line(D, E) → c
  4. Intersect(a, c) → F
  5. Intersect(b, c) → G
  6. Point(a) → H
  7. Point(b) → I
  8. Point(a) → J
  9. Point(b) → K
  10. Point(c) → L
  11. Point(c) → M
  12. Ray(F, H) → d
  13. Ray(F, L) → e
  14. Ray(F, J) → f
  15. Ray(F, M) → g
  16. Ray(G, K) → h
  17. Ray(G, L) → i
  18. Ray(G, I) → j
  19. Ray(G, M) → k
  20. Angle(d, e) → α
  21. Angle(e, f) → β
  22. Angle(f, g) → γ
  23. Angle(g, d) → δ
  24. Angle(j, i) → ε
  25. Angle(i, h) → ζ
  26. Angle(h, k) → η
  27. Angle(k, j) → θ