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# Perpendicular Lines in the Coordinate Plane

## Lines with opposite sign, reciprocal slopes that intersect at right angles.

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.
• Read

## Perpendicular Lines in the Coordinate Plane

by CK-12 //at grade
This concept teaches students about perpendicular lines in the coordinate plane, and how to use slopes to determine whether or not two lines are perpendicular.
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• PLIX

## Slopes of Perpendicular Lines

by CK-12 //at grade
Perpendicular Lines in the Coordinate Plane Interactive
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• Video

## Perpendicular Lines in the Coordinate Plane Principles

by CK-12 //at grade
This video gives more detail about the mathematical principles presented in Perpendicular Lines in the Coordinate Plane.
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• Video

## Perpendicular Lines in the Coordinate Plane Examples

by CK-12 //at grade
This video shows how to work step-by-step through one or more of the examples in Perpendicular Lines in the Coordinate Plane.
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• Downloadable Quiz

## Perpendicular Lines in the Coordinate Plane Quiz

by CK-12 //at grade
Perpendicular Lines in the Coordinate Plane quiz.
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• Critical Thinking

## Perpendicular Lines in the Coordinate Plane Discussion Questions

by CK-12 //at grade
A list of student-submitted discussion questions for Perpendicular Lines in the Coordinate Plane.
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• Real World Application

## Perpendicular Lines In The Coordiante Plane

by CK-12 //at grade
How do you show that two lines in the real world are perpendicular using a coordinate plane?
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• Study Guide

## Lines in the Coordinate Plane

by CK-12 //at grade
This study guide looks at the slopes of parallel/perpendicular lines and how to graph and derive equations for parallel/perpendicular lines.
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