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Vector Addition and Commutativity by Tim Brzezinski

Vector Addition and Commutativity by Tim Brzezinski
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2016-03-30 01:26
AngleVectorGeometric Construction
In collections Vector Operations Vector Operations
This example illustrates vector addition and its commutativity geometrically. Key mathematical concepts include vectors and angles. It uses commands like Vector, Rotate, Dilate, Translate in GeoGebra. Suitable for middle school and above students to learn the geometric meaning of vector addition.

GeoGebra Commands & Parameters

  1. Vector(A, B) → v
  2. Vector(A, C) → u
  3. Rotate(C, If[0 < a ≤ 1, ((a * 180))°, 180°], A) → C'
  4. Dilate(A, If[1 < a < 2, 2 - a, 1], B) → A'
  5. Vector(A, A') → b
  6. Rotate(C, 180°, A) → C'_1
  7. Translate(C'_1, b) → D
  8. Translate(C'_1, v) → E
  9. Vector(A, E) → f
  10. Textfield() → InputBox1
  11. Dilate(A, If[0 < a ≤ 1, 1 - a, 0], C) → A'_1
  12. Vector(A, A'_1) → w
  13. Translate(B, w) → B'
  14. Vector(A'_1, B') → c
  15. Dilate(A, If[1 < a ≤ 2, 2 - a, 0], B') → A'_2
  16. Vector(A, A'_2) → d
  17. Vector(A, B) → e
  18. Dilate(A, If[0 < g ≤ 1, 1 - g, 0], B) → A'_3
  19. Vector(A, A'_3) → h
  20. Translate(C, h) → C'_2
  21. Vector(A'_3, C'_2) → i
  22. Vector(A, C) → j
  23. Dilate(A, If[1 < g ≤ 2, 2 - g, 0], C'_2) → A'_4
  24. Vector(A, A'_4) → k