MathPlotAI Logo MathPlotAI

30-60-90 Right Triangle Exploration

30-60-90 Right Triangle Exploration
Loading the math board and drawing, please wait…
2019-06-26 09:42
TriangleTrigonometry
This example demonstrates the properties of a 30-60-90 right triangle. Key mathematical concepts include trigonometry and similar triangles. Using GeoGebra commands such as rotation, angle measurement, and segment construction, students can visually understand the side length ratios of this triangle. Suitable for middle school and above students to learn geometric construction and trigonometry.

GeoGebra Commands & Parameters

  1. Ray(B, C) → f
  2. OrthogonalLine(C, f) → g
  3. Rotate(C, π / 3, B) → B'
  4. Angle(C, B, B') → α
  5. Ray(B, B') → h
  6. Intersect(g, h) → A
  7. Segment(B, C) → i
  8. Segment(C, A) → j
  9. Segment(B, A) → k
  10. Polygon(B, C, A) → poly1, c_1, a, b
  11. Circle(A, (0.2 * i)) → e
  12. Intersect(e, k) → D,
  13. Intersect(e, j) → E,
  14. CircleSector(A, D, E) → d
  15. Dilate(A, If[0 < l ≤ 1, 1 - l, 0], B) → C'
  16. Vector(A, C') → u
  17. Translate(d, u) → d'
  18. Rotate(d', If[1 < l ≤ 2, (((l - 1) * 2) * π / 3), (2 * π / 3)], B) → d''
  19. Dilate(A, If[2 < l ≤ 3, 3 - l, 0], B) → C'_1
  20. Vector(A, C'_1) → v
  21. Translate(d, v) → d'_1
  22. Rotate(d'_1, If[3 < l ≤ 4, (((-(l - 3)) * 7) * π / 6), (-7 * π / 6)], B) → p
  23. Dilate(A, If[4 < l ≤ 5, 5 - l, 0], C) → C'_2
  24. Vector(A, C'_2) → w
  25. Translate(d, w) → d'_2
  26. Dilate(A, If[6 < l ≤ 7, 7 - l, 0], C) → C'_3
  27. Vector(A, C'_3) → m
  28. Translate(d, m) → d'_3
  29. Rotate(d'_2, If[5 < l ≤ 6, ((-(l - 5)) * π / 2), ((-π)) / 2], C) → q
  30. Rotate(d'_3, If[7 < l ≤ 8, (((l - 7) * 4) * π / 3), (4 * π / 3)], C) → r
  31. Dilate(A, If[8 < l ≤ 9, 9 - l, 0], C) → C'_4
  32. Vector(A, C'_4) → n
  33. Translate(d, n) → d'_4
  34. Rotate(d'_4, If[9 < l ≤ 10, (((l - 9) * 7) * π / 6), (7 * π / 6)], C) → s
  35. Midpoint(B, A) → F
  36. Dilate(B, If[10 < l ≤ 11, 11 - l, 0], C) → A'
  37. Segment(B, A') → t
  38. Rotate(B, If[11 < l ≤ 12, ((l - 11) * π / 3), π / 3], B) → A'_1
  39. Rotate(A', If[11 < l ≤ 12, ((l - 11) * π / 3), π / 3], B) → A''
  40. Segment(A'_1, A'') → t'
  41. Dilate(B, If[12 < l ≤ 13, 13 - l, 0], F) → A'_2
  42. Vector(B, A'_2) → u_1
  43. Translate(B, u_1) → A'_3
  44. Translate(A', u_1) → A''_1
  45. Segment(A'_3, A''_1) → t'_1
  46. Rotate(A'_3, If[13 < l ≤ 14, ((l - 13) * π / 3), π / 3], F) → G
  47. Rotate(A''_1, If[13 < l ≤ 14, ((l - 13) * π / 3), π / 3], F) → H
  48. Segment(G, H) → f_1