Answer:
omg that one is hard but it is 18j-6m
I believe it is the first one but I might be wrong.

Since it's a Trapezoid with its non - parallel sides equal to one another,

[ By forming co - interior angle pair ]



Now, similarly,



Similarly,



Question asked: if a number has an absolute value equal to 9,that number could be ____?
My answer: it would be C. -9 or 9