Common Core Math - HS Geometry
Lesson Plan
Establish AA similarity criterion
Goals / Objectives
State the AA (Angle-Angle) criterion for triangle similarity
Prove the AA criterion using properties of similarity transformations
Apply the AA criterion to determine if two triangles are similar
Explain why two pairs of equal angles are sufficient (don't need to check the third angle or sides)
Distinguish between AA for similarity and ASA/AAS for congruence
Use AA to solve problems involving similar triangles
Standards
HSG.SRT.A.3
HSG.SRT.A.3: Use the properties of similarity transformations to establish the AA criterion for two triangles to be similar.
Academic Vocabulary
Not in our source material
Materials
Remediation
Enrichment
Accommodations
Not in our source material