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Triangle congruence quiz

This 9th-grade quiz helps students practice identifying valid triangle congruence criteria and distinguishing between what guarantees triangle congruence and what does not. It includes multiple-choice questions on congruence criteria and questions requiring explanations of given triangles.

By Edform · Mathematics · Grade 9 · Published Oct 15, 2026 · New

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Questions

  1. Which of the following is a valid triangle congruence criterion?
  2. Select all the triangle congruence criteria that guarantee two triangles are congruent.
  3. If two triangles have two pairs of congruent sides and the included angle is congruent, the triangles are congruent.
  4. Which of the following is NOT a triangle congruence criterion?
  5. What is the name of the triangle congruence criterion where two sides and the included angle are congruent? (Write the abbreviation.)
  6. If triangle ABC is congruent to triangle DEF and AB = 7 units, what is the length of DE?
  7. Which congruence criterion is used if two triangles have all three sides congruent?
  8. Two triangles with two pairs of congruent angles and one pair of congruent sides not between the angles are always congruent.
  9. Select all pairs of triangles that are guaranteed to be congruent by the given information.
  10. Write the abbreviation for the triangle congruence criterion where two angles and the included side are congruent.

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