# Ch 3: McDougal Littell Geometry Chapter 3: Perpendicular and Parallel Lines

The Perpendicular and Parallel Lines chapter of this McDougal Littell Geometry Textbook companion course helps students learn essential geometry lessons of perpendicular and parallel lines. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Perpendicular and Parallel Lines textbook chapter.

## How it works:

• Identify the lessons in the McDougal Littell Geometry Textbook Perpendicular and Parallel Lines chapter with which you need help.
• Find the corresponding video lessons within this companion course chapter.
• Watch fun videos that cover the perpendicular and parallel lines topics you need to learn or review.
• Complete the quizzes to test your understanding.
• If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

## Students will learn:

• Defining and applying direct proofs
• Comparing types of proof
• Constructing perpendicular lines in geometry
• Proving results about perpendicular lines
• Parallel line proofs
• Using converse statements to prove lines are parallel
• Constructing a parallel line using a point not on the given line
• The parallel postulate and indirect proof
• Identifying the different parts of a graph
• The Cartesian coordinate system
• Calculating the slope of a line
• Using coordinates to prove geometric theorems
• Proving the slope criteria
• Solving geometric problems using the slope criteria

McDougal Littell Geometry is a registered trademark of McDougal Littell, which is not affiliated with Study.com.

11 Lessons in Chapter 3: McDougal Littell Geometry Chapter 3: Perpendicular and Parallel Lines
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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