Ch 5: Angles in Geometry Lesson Plans

About This Chapter

These lesson plan outlines and the resources accompanying them can help you teach geometric angles to your students. You can incorporate these lessons into your class time, assign them as homework, or use them to help your students with test prep.

Angles In Geometry Lesson Plans - Chapter Summary

The lesson plan outlines, accompanying lessons, games and activities in this chapter are designed to help you make learning angles easy and fun for your students. You will find materials that can help you teach vertical, complementary, obtuse, straight and acute angles to your students while keeping them engaged and interested. The lessons can form the basis for your syllabus, help you design your class time efficiently, and much more. These materials can help you create:

  • Lessons on right, straight, acute and obtuse angles, angle pairs, angle of elevation and more
  • Classroom assignments on vertical, straight, complementary and supplementary angles
  • Activities and games to make supplementary and complementary angles fun and easy
  • Homework assignments, examples and lessons on the definition of opposite angles
  • Games and activities on how to classify and measure angles
  • In-class or take-home assignments on the definition, formula and examples of angle of elevation

How It Helps

  • Common core: Helps you be certain that your lessons on geometric angles are consistent with current educational standards
  • Activities and games: Provides interesting, fun and easy games and activities on a wide variety of angles that you can incorporate into your class time
  • Homework/classwork suggestions: Offers ideas that you can build on to create assignments on angles that your students can complete in class or at home

How It Works

This helpful resource offers teachers lesson plan outlines with relevant tools to make planning geometry lessons easy.

  • Find lesson plans for specific geometry topics you want to cover in class.
  • Formulate your geometry class outline using the suggested classroom tools offered in the lesson plans.
  • Share the related lessons on geometric angles for each lesson plan with students in class to make learning fun and engaging.
  • Use related lesson quizzes to ensure your students understand the most important geometry concepts from the lessons.
  • Engage your students with relevant angle-related activities, discussion questions or other materials found in the lesson plan outline.

24 Lessons in Chapter 5: Angles in Geometry Lesson Plans
Test your knowledge with a 30-question chapter practice test
Angles Lesson Plan

1. Angles Lesson Plan

What is an angle? A text lesson defines 'angle' and exemplifies different types, while an in-class activity allows students to find different types of angles around them. Related lessons help to further instruction along with extensions.

Types of Angles: Right, Straight, Acute & Obtuse

2. Types of Angles: Right, Straight, Acute & Obtuse

Angles are everywhere. Learn about the different types of angles we use in mathematics, including right angles, acute angles, obtuse angles, and straight angles. See if you can tell the difference with a quiz.

Vertical Angles Lesson Plan

3. Vertical Angles Lesson Plan

This lesson gives students the opportunity to build upon their knowledge of angles as they learn about vertical angles. Students will watch a fun video, take part in a whole-class activity, and complete a hands-on, independent activity!

Vertical Angles in Geometry: Definition & Examples

4. Vertical Angles in Geometry: Definition & Examples

After completing this lesson, you will be able to identify and draw vertical angles. You will also be able to state the properties of vertical angles. After the lesson, test yourself with a quiz.

Complementary Angles Lesson Plan

5. Complementary Angles Lesson Plan

Students will get to rotate around the room through multiple stations, while they practice using a protractor to find angle measurements and explore what makes angles complementary! Have them complete the quiz to check their understanding.

Complementary Angles: Definition, Theorem & Examples

6. Complementary Angles: Definition, Theorem & Examples

In this lesson, we will define complementary angles and see how they may appear in diagrams. We will discuss two common theorems that involve complementary angles. Then you can test your knowledge with a quiz.

Complementary & Supplementary Angles Games & Activities

7. Complementary & Supplementary Angles Games & Activities

Complementary and supplementary angles are ideas that can be easily confused. Help your students learn about and practice complementary and supplementary angles with a few of these games and activities.

Exterior Angles Theorem Activities

8. Exterior Angles Theorem Activities

Teaching students about the exterior angles theorem will help them form a deeper understanding of geometry. This lesson offers some activities you can use to teach the exterior angles theorem to your class.

Angle Bisector Theorem Activities

9. Angle Bisector Theorem Activities

The angle bisector theorem is an important geometric proposition that will help students understand more about how proportions work within triangles. This lesson offers activities that will encourage better understanding of the theorem.

Opposite Angles Lesson Plan

10. Opposite Angles Lesson Plan

In this lesson plan, students will learn about opposite angles. While reading an informational text, students will use manipulatives to model the theorems outlined in the text. Students will apply their knowledge in a relevant task.

What Are Opposite Angles? - Definition & Example

11. What Are Opposite Angles? - Definition & Example

Many times when you think of opposites, you think of things that are different. In this lesson, we are going to look at opposite angles and find out that not all opposites are different.

Classifying Angles Games & Activities

12. Classifying Angles Games & Activities

Whether your students are competitive or artistic, help them practice classifying angles in a more engaging way with a few of these ideas for fun games and activities.

Angles on a Straight Line Lesson Plan

13. Angles on a Straight Line Lesson Plan

This lesson introduces angles on a straight line by first reviewing the angle measurement of a right angle. Students will complete work in workstations by calculating the missing angle(s) of a straight line.

Identifying Straight Angles

14. Identifying Straight Angles

After viewing this lesson, you should know what a straight angle looks like. You should also know what a straight angle does and how you can identify one.

Estimating Angle Measurements Lesson Plan

15. Estimating Angle Measurements Lesson Plan

How do you get your students to make a good estimate on angle measurements? Using this lesson plan, you will help your students identify ways to estimate angle measures.

How to Estimate Angle Measures

16. How to Estimate Angle Measures

In real life it takes special equipment to accurately measure angles, but you can make a pretty good guess if you know a few tricks. We'll discuss some of those in this lesson.

Measuring Angles Games & Activities

17. Measuring Angles Games & Activities

Measuring angles takes practice. Help your students get the practice they need by trying some of these games and activities focused on measuring angles.

Angle Pairs Lesson Plan

18. Angle Pairs Lesson Plan

The lesson plan provides a fun, engaging activity in which the students are responsible for all their own learning. They will become experts on one type of angle pair, and then they will teach their group about it!

Angle Pairs: Types & Concept

19. Angle Pairs: Types & Concept

There are five major types of angle pairs in geometry. In this lesson, you will explore the different types of angles and learn the rules of measuring those angles. When you finish the lesson, test your knowledge with a short quiz.

Angle of Elevation Lesson Plan

20. Angle of Elevation Lesson Plan

This lesson plan introduces angles of elevation to students and helps them contextualize this idea from every-day examples. A group activity enables students to develop a mnemonic phrase to remember trigonometric functions, then continues the learning experience with practice problems from a printable worksheet. Throughout the lesson, discussion questions are presented to build upon student's prior knowledge and extend student learning.

Angle of Elevation: Definition, Formula & Examples

21. Angle of Elevation: Definition, Formula & Examples

This lesson will define an angle of elevation, and it will provide some basic skills necessary to calculate the measure of one of these types of angles or to use it to calculate another value. Two example problems are also provided.

Protractor Games & Activities

22. Protractor Games & Activities

If you are teaching your students about angles in geometry, you will want to make sure they are versatile with protractors. This lesson offers games and activities that will help your students learn what protractors are and how they work.

Lines, Points & Angles Activities for Middle School Math

23. Lines, Points & Angles Activities for Middle School Math

By understanding lines, points, and angles, students can build their knowledge while studying more complex geometric concepts. Consider using these activities to help students explore lines, points, and angles.

Triangle and Angle Activities for Middle School

24. Triangle and Angle Activities for Middle School

The key to helping students learn information is to get them engaged with the topic. This lesson offers interactive, exciting, and engaging activities and games to help your students review information related to angles and triangles.

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

Earning College Credit

Did you know… We have over 160 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.