Common Core · High school
HSG-CO.B.8
High school — Explain how the criteria for triangle congruence (ASA, SAS and SSS) follow from the definition of congruence in terms of rigid motions.
The skill that covers it
What a student should be able to do
- Match corresponding sides and angles of congruent triangles from a congruence statement.
- Choose the criterion (SSS, SAS, ASA, AAS or HL) that proves two triangles congruent, or decide there is not enough information.
- Use CPCTC to find an unknown side or angle once triangles are congruent.
- Supply the missing statement or reason in a two-column congruence proof.