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Triangle congruence practice

Students practice identifying and applying triangle congruence criteria such as SSS, SAS, ASA, AAS, and HL through multiple-choice questions, matching exercises, and ordering tasks to develop understanding of when two triangles are congruent at the 9th-grade level.

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

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Questions

  1. Which triangle congruence criterion requires two sides and the included angle to be congruent?
  2. Which of the following sets of information are sufficient to prove two triangles are congruent? Select all that apply.
  3. Arrange the triangle congruence criteria in the order in which they are usually introduced in geometry classes.
  4. Match each congruence criterion to its description.
  5. Fill in the blank: The HL criterion can only be used with ___ triangles.
  6. Choose the correct word to complete the sentence.
  7. Sort the following information sets into those that are sufficient and those that are not sufficient to prove triangle congruence.
  8. Decide if each statement about triangle congruence is true or false.
  9. A triangle has sides of 5 cm, 7 cm, and 10 cm. Another triangle has sides of 5 cm, 7 cm, and 10 cm. How many pairs of corresponding sides are congruent?
  10. What is the minimum number of pairs of congruent parts needed to prove two triangles are congruent using the SSS criterion?

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