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# Two-Column Proofs

## Geometric proofs are among the building blocks of math. Learn how to use two column proofs to assert and prove the validity of a statement.

Levels are CK-12's student achievement levels.
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.

## Two-Column Proofs

by CK-12 //basic

Write two-column proofs.

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• Video

## Two Column Proofs Principles - Basic

by CK-12 //basic

This video provides the student with a walkthrough on two column proofs.

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• Video

## Introduction to Proof Using Properties of Congruence

by CK-12 //basic

An introduction to proofs in geometry using a two column proof and properties of congruence.

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• Flashcards

## Two-Column Proofs Flashcards

by CK-12 //basic

These flashcards help you study important terms and vocabulary from Two-Column Proofs.

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