Step 1: We know that ABC = ZFGH because all right angles
are congruent.
Step 2: We know that ZBAC = ZGFH because corresponding
angles of parallel lines are congruent.
Step 3: We know that BC =GH because it is given.
Step 4: ABC = AFGH because of the
O
ASA congruence theorem.
O AAS congruence theorem.
third angle theorem.
reflexive property.