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9 Cards in this Set
- Front
- Back
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theorem
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If both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram.
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theorem
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If both pairs of opposite angles of a quadrilateral are congruent, then the quadrilateral is a parallelogram.
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theorem
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If an angle of a quadrilateral is supplementary to both consecutive angles, then the quadrilateral is a parallelogram.
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theorem
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If the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram.
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theorem
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If one pair of opposite sides of a quadrilateral are congruent and parallel, then the quadrilateral is a parallelogram.
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theorem
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If a quadrilateral is a parallelogram, then its opposite sides are congruent.
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theorem
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If a quadrilateral is a parallelogram, then its opposite angles are congruent.
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theorem
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If a quadrilateral is a parallelogram, then its consecutive angles are supplementary.
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theorem
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If a quadrilateral is a parallelogram, then its diagonals bisect each other.
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