High School Geometry: Triangle Congruence Theorems SSS, SAS, ASA, AAS, HL (HSG-CO.C.10)Help your students confidently prove triangles congruent using SSS, SAS, ASA, AAS, and HL. This no-prep Geometry resource guides students through each triangle congruence theorem and builds their ability to justify congruence—as well as recognize when triangles cannot be proven congruent. Perfect for introducing, practicing, or reviewing triangle congruence, this print-and-go resource saves you prep ti