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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.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

by CK-12 //basic

Prove a quadrilateral is a parallelogram.

2
• 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.

0
• Video

## 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".

0
• Flashcards

## Parallelogram Theorem Converses Flashcards

by CK-12 //basic