What is the missing statement for step 7 in this proof
1. Quadrilateral DEFG is a parallelogram. given
definition of a parallelogram
3. Draw and . These line segments are
transversals cutting two pairs of parallel lines:
and and and . drawing line segments
4. Place point H where and intersect. defining a point
5. ∠HGD ≅ ∠HEF
∠HDG ≅ ∠HFE
6. Opposite sides of a parallelogram are congruent.
7. ASA criterion for congruence
8. GH ≅ EF
DH ≅ FH
Corresponding sides of congruent triangles are congruent.