Triangle Congruence & Applications

learning_notes

Last updated: 8/16/2025

Key Concepts:

  • Congruent Triangles Definition – Two triangles are congruent if all their corresponding sides and angles are equal.
  • Triangle Congruence Theorems:
    • SSS (Side-Side-Side) – All three sides of two triangles match.
    • SAS (Side-Angle-Side) – Two corresponding sides and the included angle of two triangles match.
    • ASA (Angle-Side-Angle) – Two corresponding angles and the included side of two triangles match.
    • AAS (Angle-Angle-Side) – Two corresponding angles and a non-included side of two triangles match.
    • RHL (Right Angle-Hypotenuse-Leg) – The hypotenuse and a leg of two right triangles match.

Skills Covered:

  • Determining whether two triangles are congruent based on given information.
  • Solving for missing sides and angles using triangle congruence theorems.
  • Applying congruence properties to geometric proof-style problems.

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