The difference between 7 and -14.
Numerical expression

7 - (-14)

7 + 14

21

if you use photomath right away it will give you the answer not like this app that you have to wait for people.

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.