<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />

# 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.
MEMORY METER
This indicates how strong in your memory this concept is
7
• Video

## Two Column Proofs Principles - Basic

by CK-12 //basic
This video provides the student with a walkthrough on two column proofs.
MEMORY METER
This indicates how strong in your memory this concept is
2
• 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.
MEMORY METER
This indicates how strong in your memory this concept is
2