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Similar Triangles and Side Lengths Demo

Similar Triangles and Side Lengths Demo
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2018-11-27 03:13
TriangleAngleGeometric Construction
This example demonstrates the properties and criteria of similar triangles. It involves core mathematical concepts such as the similarity criteria for triangles, proportional corresponding sides, and equal corresponding angles. The construction utilizes GeoGebra commands and objects like Polygon, PointIn, Line, Point, Intersect, Angle, Distance, and Corner as outlined in the summary. It is suitable for middle school and above students to understand the geometric properties and practical applications of similar triangles.

GeoGebra Commands & Parameters

  1. Polygon(G, H, I, J) → box, g, h, i, j
  2. PointIn(box) → K
  3. Polygon(A, B, C) → poly1, c, a, b
  4. Line(A, C) → d
  5. Point(d) → D
  6. Line(D, c) → e
  7. Point(d) → F
  8. Line(F, a) → f
  9. Intersect(e, f) → E
  10. Polygon(D, E, F) → poly2, e_1, d_1, f_1
  11. Angle(A, B, C) → α
  12. Angle(B, C, A) → β
  13. Angle(C, A, B) → γ
  14. Angle(D, E, F) → δ
  15. Angle(E, F, D) → ε
  16. Angle(F, D, E) → ζ
  17. Distance(A, B) → distanceAB
  18. Distance(B, C) → distanceBC
  19. Distance(C, A) → distanceCA
  20. Distance(D, E) → distanceDE
  21. Distance(E, F) → distanceEF
  22. Distance(F, D) → distanceFD
  23. Corner(1, 1) → Cnr1
  24. Corner(1, 2) → Cnr2
  25. Corner(1, 3) → Cnr3
  26. Corner(1, 4) → Cnr4
  27. Polygon(CN1, CN2, CN3, CN4) → Panel, cn1, cn2, cn3, cn4