Congruent Supplements of the Same Angle Proof

Congruent Supplements of the Same Angle Proof
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2016-10-20 03:20
This example demonstrates the geometric proof of congruent supplements of the same angle. Core math concepts include angles, supplementary angles, and geometric construction. It utilizes GeoGebra commands/objects such as Ray, Rotate, Angle, Circle, Line, Intersect, LaTeX, CircleSector, Dilate, Vector, Translate, Point, and CircleArc. Suitable for high school geometry proof teaching or learning.

GeoGebra Commands & Parameters

  1. Ray(A, B) → f
  2. Rotate(B, α, A) → B'
  3. Angle(B, A, B') → β
  4. Ray(A, B') → g
  5. Circle(A, 1) → c
  6. Line(B, A) → h
  7. Intersect(c, h, 2) → C
  8. Ray(A, C) → i
  9. Ray(D, E) → j
  10. Rotate(E, α, D) → E'
  11. Angle(E, D, E') → γ
  12. Ray(D, E') → k
  13. Line(E, D) → l
  14. Circle(D, 1) → d
  15. Intersect(d, l, 2) → F
  16. Ray(D, F) → m
  17. LaTeX(B', true, true) → text1
  18. Circle(D, 2) → e
  19. Intersect(e, j, 1) → G
  20. Intersect(e, k, 1) → H
  21. Line(D, i) → n
  22. CircleSector(D, G, H) → p
  23. Dilate(D, If[0 < a ≤ 1, 1 - a, 0], A) → D'
  24. Vector(D, D') → u
  25. Translate(p, u) → p'
  26. Point(n) → I
  27. Angle(I, D, E') → δ
  28. Line(D, g) → q
  29. Intersect(e, q, 2) → J
  30. Angle(H, D, J) → ε
  31. Rotate(p', If[0 < a ≤ 1, (a * ε), ε], D') → p''
  32. CircleArc(D, G, H) → r
  33. Intersect(e, m) → K,
  34. CircleSector(D, H, K) → s
  35. Dilate(D, If[2.75 < a ≤ 3.75, 3.75 - a, 0], A) → D'_1
  36. Vector(D, D'_1) → v
  37. Translate(s, v) → s'
  38. Rotate(s', If[2.75 < a ≤ 3.75, ((a - 2.75) * ε), ε], D'_1) → s''
  39. CircleArc(D, H, K) → t

AI Drawing Prompt Reference

Draw a proof of congruent supplements of the same angle. Start by drawing angle A and B, then rotate B to get B' and angle β. Draw a circle and a line, find intersection points C and D, construct angle E' and angle γ. Use rotation and circle intersections to find angles δ and ε. Finally, use rotation and scaling to construct arcs and sectors, completing the proof of congruent supplements of the same angle.
The prompt above was compiled from the original drawing commands and is for reference only.