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6-3 Proving that a Quadrilateral is Parallelogram
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I can find values that will make a quadrilateral a parallelogram.
I can decide whether a given quadrilateral is a parallelogram.
I can prove that a given quadrilateral is a parallelogram.
I can decide whether a given quadrilateral is a parallelogram.
I can prove that a given quadrilateral is a parallelogram.