Congruence Tests

Congruence Tests
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2017-04-17 17:04
This example demonstrates the conditions for determining congruent triangles. It involves core mathematical concepts such as congruence theorems (SSS, SAS, ASA, AAS). The construction utilizes GeoGebra commands/objects like Ray, Point, Segment, Circle, CircleArc, Semicircle, Angle, Rotate, and Intersect. Suitable for middle school and above students to learn geometric proofs.

GeoGebra Commands & Parameters

  1. Ray(P, P_x) → b
  2. Point(b) → P_1
  3. Segment(P, P_1) → e
  4. Point(Circle[Y, 2 * e]) → X
  5. Circle(Y, X) → r
  6. Point(r) → K
  7. Point(r) → J
  8. CircleArc(Y, K, J) → d_1
  9. Ray(Q, Q_x) → c
  10. Point(c) → Q_1
  11. Segment(Q, Q_1) → f
  12. Ray(R, R_x) → d
  13. Point(d) → R_1
  14. Segment(R, R_1) → g
  15. Point(Circle[Z, 2 * g]) → X'
  16. Circle(Z, X') → s
  17. Point(s) → M
  18. Point(s) → L
  19. CircleArc(Z, M, L) → e_1
  20. Point(Circle[C, 2 * g]) → A'
  21. Circle(C, A') → q
  22. Point(q) → I
  23. Point(q) → H
  24. CircleArc(C, H, I) → c_1
  25. Point(Circle[B, 2 * e]) → A
  26. Circle(B, A) → p
  27. Point(p) → G
  28. Point(p) → F
  29. CircleArc(B, F, G) → t
  30. Semicircle(V, O) → k_1
  31. Segment(B, A) → a
  32. Segment(B, C) → h
  33. Segment(C, A') → i
  34. Segment(Y, X) → j
  35. Segment(Y, Z) → k
  36. Segment(Z, X') → l
  37. Segment(N, O) → n
  38. Point(k_1) → S
  39. Angle(O, N, S) → α
  40. Segment(S, N) → a_1
  41. Rotate(C, α, B) → C'
  42. Angle(C, B, C') → β
  43. Ray(B, C') → b_1
  44. Intersect(p, b_1, 1) → T
  45. Segment(T, B) → g_1
  46. Rotate(Z, α, Y) → Z'
  47. Angle(Z, Y, Z') → γ
  48. Ray(Y, Z') → h_1
  49. Intersect(r, h_1, 1) → U
  50. Segment(U, Y) → i_1
  51. Segment(N, V) → j_1
  52. Intersect(c_1, t, 1) → D
  53. Intersect(d_1, e_1, 1) → E
  54. Segment(T, C) → f_1
  55. Segment(U, Z) → l_1
  56. Semicircle(B_1, A_1) → p_1
  57. Segment(B_1, A_1) → m_1
  58. Point(p_1) → C_1
  59. Segment(W, C_1) → n_1
  60. Angle(C_1, W, B_1) → δ
  61. Rotate(B, -δ, C) → B'
  62. Angle(B', C, B) → ε
  63. Rotate(Y, -δ, Z) → Y'
  64. Angle(Y', Z, Y) → ζ
  65. Ray(C, B') → q_1
  66. Ray(Z, Y') → r_1
  67. Point(b_1) → D_1
  68. Point(q_1) → E_1
  69. Point(h_1) → F_1
  70. Point(r_1) → G_1
  71. Segment(D_1, B) → s_1
  72. Segment(E_1, C) → t_1
  73. Segment(F_1, Y) → a_2
  74. Segment(G_1, Z) → b_2
  75. Semicircle(J_1, I_1) → c_2
  76. Segment(J_1, I_1) → d_2
  77. Point(c_2) → K_1
  78. Segment(H_1, K_1) → e_2
  79. Angle(I_1, H_1, K_1) → η
  80. Rotate(B, η, D_1) → B'_1
  81. Angle(B, D_1, B'_1) → θ
  82. Ray(D_1, B'_1) → f_2
  83. Rotate(Y, η, F_1) → Y'_1
  84. Angle(Y, F_1, Y'_1) → ι
  85. Ray(F_1, Y'_1) → g_2
  86. Point(g_2) → L_1
  87. Segment(L_1, F_1) → h_2
  88. Point(f_2) → M_1
  89. Segment(M_1, D_1) → i_2
  90. Rotate(B, 270*°, C) → B'_2
  91. Angle(B'_2, C, B) → κ
  92. Ray(C, B'_2) → j_2
  93. Rotate(Y, 270*°, Z) → Y'_2
  94. Angle(Y'_2, Z, Y) → λ
  95. Ray(Z, Y'_2) → k_2
  96. Point(j_2) → N_1
  97. Segment(N_1, C) → l_2
  98. Point(k_2) → O_1
  99. Segment(O_1, Z) → m_2
  100. Rotate(B, η, A) → B'_3
  101. Angle(B, A, B'_3) → μ
  102. Rotate(Y, η, X) → Y'_3
  103. Angle(Y, X, Y'_3) → ν
  104. Ray(A, B'_3) → n_2
  105. Ray(X, Y'_3) → p_2
  106. Circle(A, C) → q_2
  107. Point(n_2) → S_1
  108. Segment(S_1, A) → r_2
  109. Point(p_2) → T_1
  110. Segment(T_1, X) → s_2
  111. Ray(B, C) → t_2
  112. Ray(Y, Z) → a_3
  113. Point(t_2) → U_1
  114. Point(a_3) → V_1
  115. Segment(B, U_1) → b_3
  116. Segment(Y, V_1) → c_3
  117. Rotate(B, -δ, U_1) → B'_4
  118. Angle(B'_4, U_1, B) → ξ
  119. Rotate(Y, -δ, V_1) → Y'_4
  120. Angle(Y'_4, V_1, Y) → ο
  121. Ray(U_1, B'_4) → d_3
  122. Ray(V_1, Y'_4) → e_3
  123. Intersect(b_1, d_3) → W_1
  124. Segment(W_1, B) → f_3
  125. Segment(W_1, U_1) → g_3
  126. Intersect(h_1, e_3) → Z_1
  127. Segment(Y, Z_1) → h_3
  128. Segment(Z_1, V_1) → i_3
  129. Angle(B, W_1, U_1) → ρ
  130. Angle(Y, Z_1, V_1) → σ

AI Drawing Prompt Reference

Draw two triangles with two segments as sides, using circles and arcs to indicate equal corresponding sides, demonstrating the conditions for congruence theorems like SSS, SAS, ASA, AAS. Verify congruence by rotating one triangle and measuring corresponding angles, then draw the rotated triangle and its corresponding angles to clearly show the construction process of congruent triangles.
The prompt above was compiled from the original drawing commands and is for reference only.