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# Relationships Between Lines

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Author: Leif Park Jordan
##### Description:
1.

Define collinear, coplanar, parallel, perpendicular and skew.

2.

Present how to use symbols to indicate parallel (ex  ǀǀ ) and perpendicular relationships (ex  ).

3.

Provide examples that allow practice identifying the new terms.

This packet should help a learner seeking to understand the definitions of collinear, coplanar, parallel, skew and perpendicular and their relationship to points, lines and planes.

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Tutorial

## Collinear Points

This video introduces the concept of collinear points.

## Coplanar Lines

This video provides an introduction to the ways in which two lines that exist entirely in the same plane (coplanar lines) can interact.

Source: Paul on Guaranteach

## Parallel Lines

This video explains the concept of parallel lines and the notation used to indicate that two lines are parallel.

Source: Paul on Guaranteach

## Skew Lines

This video introduces the concept of skew lines.

## Perpendicular Lines

This video introduces the concept of perpendicular lines and how they are notated.

Source: JasmineWanek on Guaranteach

## Practice Problems

This slideshow allows the learner to test their knowledge of the material in this packet.

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