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Question
CRITICAL THINKING The vertices of a quadrilateral after a reflection in the line $y=-x$ , followed by a rotation of $90$ $\degree$ about the origin, are $D″(-1,\ -2),\ E″(4,\ -1),\ F″(3,\ 2)$ , and $G″(1,\ 1)$ . What are the vertices of quadrilateral $DEFG$ ?