find the missing leg of the triangle using a squared plus b squared equals c squared. if one side is 21, one is 15.what would the other side be? 6, 216, 14.69, 14.70

It should be amark me brainliest

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)

55, 90 and 35 (when you add it, it should be 180)