Lesson Worksheet: Proving Triangles Congruent: SSS and SAS Mathematics

In this worksheet, we will practice proving the congruence of two triangles using the side-side-side (SSS) criterion and the side-angle-side (SAS) criterion.


Complete the sentence: These figures are .

  • Aneither similar nor congruent
  • Bsimilar but not congruent
  • Ccongruent


Given that 𝐸 is the midpoint of 𝐴𝐶 in the given figure, without referencing angles, which congruence criteria could you use to prove triangles 𝐴𝐵𝐸 and 𝐶𝐵𝐸 are congruent?

  • ASSS
  • BASA
  • CSAS


The two triangles in the given figure have equal sides. Are the two triangles congruent?

  • AYes
  • BNo

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