: Grade 8 is where proofs (like CPCTC and congruence ) become vital. Resources like The Well-Trained Mind Forum suggest spending extra time on triangle inequality theorems.
If you are looking for a guide to the by L.S. Atanasyan , there are several high-quality resources and "GDZ" (ready-made homework answers) available to help you check your work and understand complex proofs. Top Resources for the Atanasyan Workbook geometriia rabochaia tetrad 8 klass atanasian gdz
: Use GDZ as a verification tool. Try to solve the problem first, then check the solution to find where your logic might have diverged. : Grade 8 is where proofs (like CPCTC