Ch 3: Chapter 3: Parallel and Perpendicular Lines

About This Chapter

The Parallel and Perpendicular Lines chapter of this Holt McDougal Larson Geometry Companion Course helps students learn the essential lessons associated with perpendicular and parallel lines. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Parallel and Perpendicular Lines textbook chapter.

How It Works:

  • Identify the lessons in the Holt McDougal Parallel and Perpendicular Lines chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the parallel and perpendicular 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:

  • Meaning of parallel lines
  • Angle types
  • Transverse, parallel and perpendicular lines
  • How to confirm a parallel line
  • Converse statements that can prove parallel lines
  • How to determine the slope of a line
  • Slope-intercept form as well as point-slope form

Holt McDougal is a registered trademark of Houghton Mifflin Harcourt, which is not affiliated with Study.com.

8 Lessons in Chapter 3: Chapter 3: Parallel and Perpendicular Lines
Test your knowledge with a 30-question chapter practice test
What are Parallel Lines? - Definition & Concept

1. What are Parallel Lines? - Definition & Concept

In this lesson, you will learn about parallel lines and how you can identify and label them. You'll also find out how they are similar to things found in everyday life.

Types of Angles: Vertical, Corresponding, Alternate Interior & Others

2. Types of Angles: Vertical, Corresponding, Alternate Interior & Others

In addition to basic right, acute, or obtuse angles, there are many other types of angles or angle relationships. In this lesson, we will learn to identify these angle relationships and discuss their measurements.

Parallel, Perpendicular and Transverse Lines

3. Parallel, Perpendicular and Transverse Lines

What are the different types of lines? Where are they visible in the real world and how can you recognize them? Find out here and test your knowledge with a quiz.

Parallel Lines: How to Prove Lines Are Parallel

4. Parallel Lines: How to Prove Lines Are Parallel

Watch this video lesson to learn how you can prove that two lines are parallel just by matching up pairs of angles. Learn which angles to pair up and what to look for.

Using Converse Statements to Prove Lines Are Parallel

5. Using Converse Statements to Prove Lines Are Parallel

Because a pair of parallel lines produces unique angle characteristics, we can use this information to our advantage. Watch this video lesson to see how we turn this advantage into converse statements to help us prove parallel lines.

How to Find and Apply The Slope of a Line

6. How to Find and Apply The Slope of a Line

In this lesson, we'll discover all about the slopes of lines. We'll learn about different types of slopes and how to find the slopes of lines. We'll use two methods: the slope formula and the slope-intercept form.

Calculating the Slope of a Line: Point-Slope Form, Slope-Intercept Form & More

7. Calculating the Slope of a Line: Point-Slope Form, Slope-Intercept Form & More

Being able to calculate the slope of a line is a very useful skill to have. Why? Watch this video lesson to find out and learn how to find the slope when working with various equations and various lines.

What are Perpendicular Lines? - Definition & Meaning

8. What are Perpendicular Lines? - Definition & Meaning

Perpendicular lines are shaped like a 'T' and have special properties that non-perpendicular lines don't have. Because of these special properties, it is important to be able to distinguish perpendicular lines from those that aren't. In this lesson, we will explore ways to determine whether or not two lines are perpendicular.

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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