Graph ABCD on graph paper. What shape is ABCD? Justify your answer.
ABCD is rotated 180° about the origin to create A′B′C′D′. Then A′B′C′D′ is reflected across the x‑axis to form A″B″C″D″. Name the coordinates of C′ and D″.
Recall the properties of quadrilaterals. Do any apply to this shape?
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