High School · Congruence

CCSS.MATH.CONTENT.HSG.CO.B.7

Use the definition of congruence in terms of rigid motions to show that two triangles are congruent if and only if corresponding pairs of sides and corresponding pairs of angles are congruent.

Read this standard on the official Common Core site

Lessons that teach this standard

• Triangle Congruence: SSS, SAS, ASA and AAS

  Why three matching parts are enough to prove two triangles congruent, how each criterion follows from rigid motions, why SSA and AAA fail, and how CPCTC finishes a proof.