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Parallel and Trapezoid Properties Animation

Parallel and Trapezoid Properties Animation
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2016-06-24 10:12
AngleCoordinate GeometryGeometric Construction
In collections Congruence (CO) Cluster Congruence (Vol 2) CCSS High School: Geometry (Congruence) Volume 2 CCSS High School: Geometry (Congruence) Volume 2 CCSS High School: Geometry (Congruence) Volume 2 Geometry (Congruence) Volume 2 CCSS High School: Geometry (Congruence) Volume 2 CCSS High School: Geometry (Congruence) Volume 2 CCSS High School: Geometry (Congruence) Volume 2 CCSS High School: Geometry (Congruence) Volume 2 CCSS High School: Geometry (Congruence) Volume 2 CCSS High School: Geometry (Congruence) Volume 2 CCSS High School: Geometry (Congruence) Volume 2 Gail LeBlancCCSS High School: Geometry (Congruence) Volume 2 CCSS High School: Geometry (Congruence) Volume 2
This example demonstrates the geometric properties of parallelograms and trapezoids through animation, focusing on the relationships between angles, medians, and slopes. Key mathematical concepts include angles, trapezoids, slope differences, medians, ratios, hyperbolas, and squares. The construction utilizes GeoGebra commands and objects such as Line, Ray, Point, Midpoint, Slope, OrthogonalLine, Mirror, Dilate, Segment, Circle, Intersect, CircleSector, Vector, Translate, Angle, Rotate, and Polygon. Suitable for high school mathematics education to understand geometric transformations and properties.

GeoGebra Commands & Parameters

  1. Line(A, B) → a
  2. Ray(A, B) → b
  3. Point(b) → C
  4. Midpoint(A, C) → D
  5. Line(A, C) → c
  6. Slope(c) → d
  7. OrthogonalLine(D, c) → g
  8. Point(g) → E
  9. Ray(D, E) → h
  10. Point(h) → F
  11. Slope(h) → i
  12. Line(F, c) → l
  13. Point(l) → G
  14. Point(l) → H
  15. Ray(F, G) → m
  16. Ray(F, H) → n
  17. Point(m) → I
  18. Mirror(I, h) → I'
  19. Dilate(A, If[0 < o ≤ 1, 1 - o, 0], C) → A'
  20. Segment(A, A') → p
  21. Dilate(A, If[1 < o ≤ 2, 2 - o, 0], I) → A'_1
  22. Segment(A, A'_1) → q
  23. Segment(A, C) → r
  24. Segment(C, I') → s
  25. Segment(I', I) → t
  26. Segment(I, A) → a_1
  27. Circle(A, (0.2 * Min[a_1, r])) → c_1
  28. Circle(I, (0.2 * Min[a_1, r])) → d_1
  29. Intersect(d_1, a_1, 1) → J
  30. Intersect(d_1, t, 1) → K
  31. Intersect(c_1, r, 1) → L
  32. Intersect(c_1, a_1, 1) → M
  33. CircleSector(A, L, M) → e_1
  34. CircleSector(I, J, K) → f_1
  35. Dilate(I, If[2 < o ≤ 3, 3 - o, 0], I') → I'_1
  36. Segment(I, I'_1) → b_1
  37. Dilate(A, If[3 < o ≤ 4, 4 - o, 0], C) → A'_2
  38. Vector(A, A'_2) → u
  39. Translate(A, u) → A'_3
  40. Translate(A'_1, u) → N
  41. Segment(A'_3, N) → q'
  42. OrthogonalLine(A, r) → g_1
  43. Point(g_1) → O
  44. Angle(I, A, O) → α
  45. Angle(I', C, A) → β
  46. Rotate(A'_3, If[4 < o ≤ 5, (((o - 4) * 2) * α), (2 * α)], C) → P
  47. Rotate(N, If[4 < o ≤ 5, (((o - 4) * 2) * α), (2 * α)], C) → N'
  48. Segment(P, N') → q''
  49. Dilate(A, If[5 < o ≤ 6, 6 - o, 0], C) → A'_4
  50. Vector(A, A'_4) → v
  51. Translate(e_1, v) → h_1
  52. Rotate(h_1, If[6 < o ≤ 7, ((o - 6) * ((2 * α) + β)), (2 * α) + β], C) → k_1
  53. Dilate(I, If[7 < o ≤ 8, 8 - o, 0], I') → I'_2
  54. Vector(I, I'_2) → w
  55. Translate(f_1, w) → p_1
  56. Rotate(p_1, If[8 < o ≤ 9, ((-(o - 8)) * β), (-β)], I') → q_1
  57. Dilate(A, If[9 < o ≤ 10, 10 - o, 0], I') → A'_5
  58. Segment(A, A'_5) → i_1
  59. Dilate(A, If[10 < o ≤ 11, 11 - o, 0], I) → A'_6
  60. Vector(A, A'_6) → u_1
  61. Translate(A, u_1) → A'_7
  62. Translate(A'_5, u_1) → Q
  63. Segment(A'_7, Q) → j_1
  64. Segment(I, C) → l_1
  65. Angle(L, A, I') → γ
  66. Rotate(A'_7, If[11 < o ≤ 12, ((-(o - 11)) * (2 * γ)), (-2 * γ)], I) → R
  67. Rotate(Q, If[11 < o ≤ 12, ((-(o - 11)) * (2 * γ)), (-2 * γ)], I) → Q'
  68. Segment(R, Q') → m_1
  69. Polygon(A, C, I', I) → poly1, a_2, c_2, i', i_2