Similar Right Triangles by Jedi Algebron

Similar Right Triangles by Jedi Algebron
Loading the math board and drawing, please wait…
2016-02-18 22:16
This example demonstrates the properties of similar right triangles. Key mathematical concepts include similar triangles and right triangles. Using GeoGebra commands such as Line, Intersect, OrthogonalLine, etc., similar right triangles are constructed. Suitable for junior high school geometry learning.

GeoGebra Commands & Parameters

  1. Line(PP, C) → a_1
  2. Intersect(a_1, xAxis) → A
  3. OrthogonalLine(C, a_1) → b_1
  4. Intersect(b_1, xAxis) → B
  5. Segment(C, A) → b
  6. Segment(C, B) → a
  7. Segment(A, B) → c
  8. OrthogonalLine(C, c) → d
  9. Intersect(d, c) → D_1
  10. Segment(C, D_1) → e
  11. Polygon(C, D_1, B) → poly1, b_2, c_1, d_1
  12. Polygon(C, D_1, A) → poly2, a_2, c_2, d_2
  13. Ray(A, C) → f
  14. Ray(A, B) → g
  15. Ray(C, B) → h
  16. Vector(A, C') → u
  17. Translate(C, u) → C'_1
  18. Translate(D_1, u) → D'
  19. Translate(A, u) → A'
  20. Polygon(C'_1, D', A') → poly2', a', c'_1, d'
  21. Vector(C, B') → v
  22. Translate(C, v) → C'_2
  23. Translate(D_1, v) → D'_1
  24. Translate(B, v) → B'_1
  25. Polygon(C'_2, D'_1, B'_1) → poly1', b'_1, c'_2, d'_1
  26. Polygon(A, C, B) → poly3, b_3, a_3, c_3
  27. Vector(A, AA) → w
  28. Translate(A, w) → A'_1
  29. Translate(C, w) → C'_3
  30. Translate(B, w) → B'_2
  31. Polygon(A'_1, C'_3, B'_2) → poly3', b'_2, a'_1, c'_3
  32. Angle(A'_1, C'_3, B'_2) → α
  33. Angle(B'_2, A'_1, C'_3) → β
  34. Angle(C'_3, B'_2, A'_1) → γ
  35. Angle(C, B, A) → δ
  36. AngularBisector(A', C'_1, D') → j
  37. AngularBisector(C'_1, D', A') → k
  38. Intersect(j, k) → E
  39. Rotate(C'_1, (n * (180° - β)), E) → F
  40. Rotate(D', (n * (180° - β)), E) → D''
  41. Rotate(A', (n * (180° - β)), E) → A''
  42. Polygon(F, D'', A'') → poly2'', a'', f_1, d''
  43. AngularBisector(D'_1, C'_2, B'_1) → l
  44. AngularBisector(C'_2, B'_1, D'_1) → m
  45. Intersect(l, m) → G
  46. Angle(A'_1, B, C) → ε
  47. Rotate(C'_2, (-((n * ε))), G) → H
  48. Rotate(D'_1, (-((n * ε))), G) → D
  49. Rotate(B'_1, (-((n * ε))), G) → J
  50. Polygon(H, D, J) → poly1'', j_1, h_1, i_1
  51. Midpoint(d'') → I
  52. Midpoint(i_1) → K
  53. OrthogonalLine(I, d'') → p
  54. OrthogonalLine(K, i_1) → q
  55. Mirror(F, p) → F'
  56. Mirror(D'', p) → D'''
  57. Mirror(A'', p) → A'''
  58. Polygon(F', D''', A''') → poly2''', a''', f', d'''
  59. Mirror(H, q) → H'
  60. Mirror(D, q) → D'_2
  61. Mirror(J, q) → J'
  62. Polygon(H', D'_2, J') → poly1''', j', h', d'_2
  63. Angle(A, C, B) → ζ
  64. Angle(C'_1, D', A') → η
  65. Angle(B'_1, D'_1, C'_2) → θ
  66. Angle(D_1, A, C) → ι
  67. Angle(D', A', C'_1) → κ
  68. Segment(A, D_1) → r
  69. Segment(D_1, B) → s
  70. Angle(D'', A'', F) → λ
  71. Angle(F, D'', A'') → μ
  72. Angle(C, D_1, A) → ν
  73. Angle(B, D_1, C) → ξ
  74. Angle(A''', D''', F') → ο
  75. Angle(F', A''', D''') → ρ
  76. Angle(C'_2, B'_1, D'_1) → σ
  77. Angle(J, D, H) → τ
  78. Angle(H, J, D) → υ
  79. Angle(H', D'_2, J') → ϕ
  80. Angle(D'_2, J', H') → χ

AI Drawing Prompt Reference

Draw two similar right triangles. Start by drawing a right triangle ABC with C as the right angle vertex, and then draw a perpendicular line from C to AB, intersecting the x-axis at points A and B. Construct the sides and auxiliary lines of the triangle, and use translation and rotation commands to generate a similar triangle A'B'C' to the original triangle, ensuring that corresponding angles are equal. Finally, use angle bisectors to construct the corresponding sides of the similar triangles.
The prompt above was compiled from the original drawing commands and is for reference only.