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## Ways to show if a quadrilateral has two pairs of parallel sides.

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Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
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by CK-12 //basic
Prove a quadrilateral is a parallelogram.
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• Video

## Proving a Quadrilateral is a Parallelogram Principles - Basic

by CK-12 //basic
This video provides the student with a walkthrough on proving that a quadrilateral is a parallelogram.
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## Proving a Quadrilateral is a Parallelogram Examples - Basic

by CK-12 //basic
This video provides the student with a walkthrough of one or more examples from the concept "Proving a Quadrilateral is a Parallelogram".
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• Flashcards

## Parallelogram Theorem Converses Flashcards

by CK-12 //basic