Angles ∠1 and ∠3 are congruent TPT - F. lines c and d are parallel.
Angles ∠5 and ∠8 are supplementary
Angles ∠5 and ∠4 are congruent
Angles ∠2 and ∠6 are congruent interior TPT - Z. lines c and d are parallel.
Angles ∠2 and ∠3 are supplementary interior TPT - C. lines c and d are parallel.