Proof of Hyperbolic Reflection

Proof of Hyperbolic Reflection
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2020-01-13 08:21
① This GeoGebra example demonstrates the construction and proof of hyperbolic reflection, visually showing how reflection preserves geometric and metric relationships on a hyperbola. ② Core mathematical concepts include hyperbola, reflection transformation, dilation, sequences and series, quadratic functions, hypothesis testing, and right triangle properties, integrating geometry with algebraic verification. ③ Construction highlights: based on the summary, it uses commands such as Segment, Point, Circle, Intersect, Midpoint, Line, Polygon, Angle, and Ray, with auxiliary objects including foci F_1, F_2, vertices V_1, V_2, and text labels (text1–text6) to annotate proof steps. ④ Suitable for high school to undergraduate geometry instruction, especially for analytic geometry, hyperbola properties, and transformation geometry, and for students to independently explore the mathematical essence of reflection.

GeoGebra Commands & Parameters

  1. Segment(E, D) → j
  2. Point(d) → P
  3. Segment(F_1, P) → e
  4. Segment(P, F_2) → f
  5. Circle(P, F_2) → h
  6. Intersect(h, e, 1) → G
  7. Segment(P, G) → i
  8. Segment(P, F_2) → m
  9. Segment(G, F_2) → n
  10. Midpoint(n) → M
  11. Line(P, M) → q
  12. Polygon(M, P, F_2) → poly2, f_2, c_2, a_2
  13. Segment(M, G) → r
  14. Segment(M, F_2) → s
  15. Angle(P, M, G) → α
  16. Point(q) → Q
  17. Segment(F_2, Q) → t
  18. Segment(Q, G) → d_1
  19. Segment(F_1, Q) → e_1
  20. Angle(G, P, M) → β
  21. Angle(M, P, F_2) → γ
  22. Ray(F_1, P) → f_1
  23. Point(f_1) → A
  24. Point(q) → B
  25. Angle(A, P, B) → δ
  26. Ray(F_2, P) → g_1
  27. Point(g_1) → C
  28. Angle(B, P, C) → ε