Create a triangle with specified area: Geometric construction and area calculati

Create a triangle with specified area: Geometric construction and area calculati
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2022-09-12 22:18
This example demonstrates how to create a triangle with a given area using GeoGebra and perform area calculations. The key mathematical concepts include area, geometric construction, and trigonometry. Construction involves using commands like Point, Polygon, OrthogonalLine, Midpoint, and Dilate to accurately shape the triangle. It is suitable for middle or high school mathematics courses for teaching geometric construction and area computation.

GeoGebra Commands & Parameters

  1. Point(Ray[A, A + (1, 0)]) → B
  2. PointIn(d) → C
  3. Polygon(A, B, C) → t1, f, a, b
  4. OrthogonalLine(C, g) → h
  5. Intersect(g, h) → C_{1}
  6. Midpoint(C, C_{1}) → D
  7. Midpoint(b) → E
  8. Midpoint(a) → G
  9. Dilate(C, If[0 < c ≤ 1, 1 - c, 0], D) → F'
  10. Segment(C, F') → i
  11. Dilate(D, If[1 < c ≤ 2, 2 - c, 0], C_{1}) → D'
  12. Segment(D, D') → j
  13. Rotate(C, If[2 < c ≤ 3, ((c - 2) * pi), pi], D) → F'_{1}
  14. Rotate(F', If[2 < c ≤ 3, ((c - 2) * pi), pi], D) → F''
  15. Segment(F'_{1}, F'') → i'
  16. Dilate(E, If[0 < c ≤ 2, (0.5 * (2 - c)), 0], D) → E'
  17. Segment(E, E') → k
  18. Dilate(G, If[0 < c ≤ 2, (0.5 * (2 - c)), 0], D) → G'
  19. Segment(G, G') → l
  20. Angle(C, B, A) → β
  21. Angle(B, A, C) → γ
  22. Polygon(A, B, G, E) → q1, a_1, b_1, g_1, e
  23. Polygon(G, C, E) → t2, e_1, g_2, f_1
  24. Rotate(G, If[4 < c ≤ 5, ((c - 4) * pi), pi], E) → G'_{1}
  25. Rotate(C, If[4 < c ≤ 5, ((c - 4) * pi), pi], E) → F'_{2}
  26. Rotate(E, If[4 < c ≤ 5, ((c - 4) * pi), pi], E) → E'_{1}
  27. Polygon(G'_{1}, F'_{2}, E'_{1}) → t2', e'_{1}, g'_{1}, f'_{2}
  28. Segment(A, E) → m
  29. Segment(B, G) → n
  30. Segment(G, C) → p
  31. Segment(C, E) → q
  32. Segment(F'_{2}, E) → r
  33. Segment(E, G'_{1}) → s
  34. Segment(G'_{1}, F'_{2}) → t
  35. Segment(G, C) → h_1
  36. Segment(C, E) → i_1
  37. If(β ≟ pi / 2, 5, 8) → o
  38. OrthogonalLine(B, p_1) → j_1
  39. Intersect(p_1, j_1) → H
  40. OrthogonalLine(G, g) → k_1
  41. Intersect(k_1, g) → I
  42. Dilate(G, If[5 < c ≤ 6, 6 - c, 0], I) → G'_{2}
  43. Segment(G, G'_{2}) → l_1
  44. Polygon(A, I, G, G'_{1}) → q2, a_2, i_2, g_3, m_1
  45. Polygon(I, B, G) → t3, g_4, i_3, b_2
  46. Dilate(G, If[7 < c ≤ 8, 8 - c, 0], G'_{1}) → G'_{3}
  47. Vector(G, G'_{3}) → u
  48. Translate(I, u) → I'
  49. Translate(B, u) → B'
  50. Translate(G, u) → G'_{4}
  51. Polygon(I', B', G'_{4}) → t3', g'_{4}, n_1, b'
  52. Segment(G'_{3}, I') → q_1
  53. Segment(G'_{3}, B') → r_1
  54. Dilate(B, If[5 < c ≤ 6, 6 - c, 0], H) → H'
  55. Polygon(A, B, H, G'_{1}) → q3, a_3, b_3, h_2, t_1
  56. Polygon(B, H, G) → t4, g_5, b_4, h_3
  57. Translate(B, u) → B'_{1}
  58. Translate(H, u) → H'_{1}
  59. Translate(G, u) → G'_{5}
  60. Polygon(B'_{1}, H'_{1}, G'_{5}) → t4', g'_{5}, b'_{1}, h'_{1}
  61. Segment(B'_{1}, G'_{3}) → c_1
  62. Segment(B'_{1}, H'_{1}) → d_1
  63. Segment(B, H') → s_1
  64. Point(Line[A, B]) → F
  65. Point(f_2) → J
  66. Intersect(eq1, Line[A, B]) → K
  67. Segment(J, K) → j_2
  68. Point(Line[A, B]) → L
  69. Angle(L, K, J) → α
  70. Angle(K, J, C) → δ
  71. RotateText(text2, pi / 2) → text3

AI Drawing Prompt Reference

Draw a triangle by first determining a point, then drawing a ray from it and marking a second point on the ray. Use a given area method to find the third point and connect the three points to form the triangle. From the third point, draw a perpendicular line to a certain line, find the intersection point, and perform a series of scaling and rotation operations based on this point to create multiple auxiliary shapes and connecting lines, demonstrating the geometric construction and area calculation of the triangle.
The prompt above was compiled from the original drawing commands and is for reference only.