Geometry Module 1, Topic D, Lesson 25

Geometry Background

Student Outcomes

  • Students learn why any two triangles that satisfy the SAA or HL congruence criteria must be congruent.
  • Students learn why any two triangles that meet the AAA or SSA criteria are not necessarily congruent.

Downloadable Resources

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Common Core Learning Standards

CCLS State Standard
G.CO.7 Use the definition of congruence in terms of rigid motions to show that two triangles are congruent...
G.CO.8 Explain how the criteria for triangle congruence (ASA, SAS, and SSS) follow from the definition of...

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