The end point of GH(line) are G(-2, -7) and H(-8, 7) find the coordinates of the midpoint M

Step-by-step explanation:

if (x,y)is mid point of two points (x1,y1) ,(x2,y2) then

x=(x1+x2)/2

and y=(y1+y2)/2

coordinates of M are ((-2+(-8))/2,(-7+7)/2)

or are (-5,0)

yes because a quadrilateral is equal to 4 sides and a rhombus has 4 sides so technacly it is a quadrilateral.