What set do all these numbers belong to? Name all of them. Thanks 10.32 square root of 49 -48

Idk what the answer is bc i don't get it

1. statement- ca is parallel to db and e is the midpoint of ad reason- given2. statement- reason- alternate interior angles3. statement- de is congruent to ae reason- definition of midpoint4. statement- triangle aec is congruent to triangle deb reason- asa (angle side angle)