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Which of the following is NOT a criterion of congruent triangles?

  1. A
    Angle-Side-Angle
  2. B
    Angle-Angle-Angle
  3. C
    Side-Angle-Side
  4. D
    Side-Side-Side

Solution & Step-by-step Explanation

Angle-Angle-Angle (AAA) establishes similarity between two triangles, not congruence, because triangles can have identical corresponding angles but different side lengths (different sizes). The valid standard criteria for triangle congruence are SSS, SAS, ASA, AAS, and RHS.

Practice this question

Try it yourself before checking the explanation above.

Which of the following is NOT a criterion of congruent triangles?
A
Angle-Side-Angle
B
Angle-Angle-Angle
C
Side-Angle-Side
D
Side-Side-Side

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GeometryCongruency of Triangles

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