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Vector Projections in 2D

Vector Projections in 2D
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2019-10-05 20:13
VectorCoordinate GeometryGeometric Construction
This example demonstrates projecting one vector onto another, illustrating the geometric and algebraic concepts involved. Key math concepts include vector projection, dot product, magnitude calculation, and orthogonality. Constructed using GeoGebra commands like Vector, Line, Point, OrthogonalLine, Intersect, etc. Suitable for high school students, university beginners, and educators teaching linear algebra or analytical geometry.

GeoGebra Commands & Parameters

  1. Vector(A, B) → v
  2. Line(A, B) → f
  3. Point(f) → C
  4. Point(f) → D
  5. Vector(A, E) → u
  6. OrthogonalLine(E, f) → g
  7. Intersect(f, g) → F
  8. Vector(A, F) → w
  9. Vector(F, E) → b
  10. Angle(E, F, A) → α
  11. Ray(A, D) → h
  12. Ray(B, C) → i
  13. Line(A, g) → j
  14. Line(B, g) → k
  15. Circle(A, 1 / 2) → d
  16. Circle(B, 1 / 2) → e
  17. Intersect(d, j, 1) → G
  18. Intersect(e, k, 1) → H
  19. Dilate(G, If[0 < c ≤ 1, 1 - c, 0], H) → G'
  20. Dilate(A, If[0 < c ≤ 1, 1 - c, 0], F) → A'
  21. Vector(A, A') → m
  22. Segment(F, E) → n
  23. Distance(A, E) → distanceAE
  24. Distance(A, B) → distanceAB
  25. Distance(G, G') → distanceGG'
  26. Intersect(e, k, 1) → I
  27. Intersect(e, k) → J, K
  28. Intersect(d, j) → L, M
  29. Dilate(M, If[0 < c ≤ 1, 1 - c, 0], K) → M'
  30. Distance(M, K) → distanceMK
  31. Angle(E, A, B) → β
  32. Point(f) → N
  33. Ray(F, N) → l
  34. Distance(A, A') → distanceAA'
  35. SurdText(p) → text3
  36. Distance(O, P) → distanceOP
  37. SurdText(xx) → text6
  38. SurdText(yy) → text7