Assertion: parallelogram | /r/HasProperty | ∠1 ≅
Facets:
Source sentences:
text: ; AD||BC 3 Def. of a parallelogram 4 ∠1 ≅ ∠4; ∠2 ≅ ∠3 4 2 || lines cut by a trans.
text: AD||BC 3 Def. of a parallelogram 4 ∠1 ≅ ∠4; ∠2 ≅ ∠3 4 Alternate interior angles 5 ∠1+∠2