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Geometry: Corresponding Parts of Congruent Triangles
by Texas Instruments - Action Consequence Lesson

Updated on June 13, 2014


  • Students will identify corresponding parts of congruent triangles.
  • Students will use appropriate notation to describe two congruent triangles.
  • Students will reason abstractly and quantitatively (CCSS Mathematical Practice).


  • corresponding parts
  • congruent triangles

About the Lesson

In this lesson students will investigate corresponding parts of congruent triangles. As a result students will:

  • Manipulate given segments and angles to form a triangle that is congruent to a given triangle.
  • Identify the corresponding parts for the triangle they formed and the given triangle.
  • Manipulate two triangles to visually map the corresponding parts to each other.
  • Write and interpret congruence statements using notation that designates the corresponding parts.