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Ch 40: THEA Test: Principles of Geometry

About This Chapter

Learn more about the principles of geometry by exploring the short video lessons in this chapter. You can take self-assessment quizzes to gauge your comprehension of the materials as you prepare to take the THEA test in Texas.

THEA Test: Principles of Geometry - Chapter Summary

This chapter can give you the in-depth look at the principles of geometry you need to succeed on the THEA test. After reviewing the lessons, you will have the knowledge to:

  • Understand the undefined terms of geometry
  • Analyze points, lines and angles in geometry
  • Define the polygon and identify types of angles
  • Describe parallel, perpendicular and transverse lines
  • Examine the basics shapes of geometry and understand the properties of triangles
  • Identify similar triangles and define vertical and complementary angles
  • Discuss transformations in math and triangle congruence postulates

You can scroll through the list of videos using the right-hand sidebar to find the lessons you most need to review. Watch the videos in any order and as often as needed until you're sure you understand the lessons.

THEA Test: Principles of Geometry Objectives

This chapter can help you brush up on your knowledge of the principles of geometry so you're prepared to tackle related questions in the mathematics section of the THEA test. This section is one of three and consists of 50 multiple-choice questions. You can use the lessons in this chapter to prepare for specific geometry questions, then test your understanding with short lesson quizzes. A chapter exam is available to gauge your comprehension of the entire chapter.

The THEA test is ensures students interested in entering a Texas public college or university have the math, writing and reading knowledge needed to succeed as freshmen. To pass this section of the assessment, you must earn a minimum score of 230.

11 Lessons in Chapter 40: THEA Test: Principles of Geometry
Test your knowledge with a 30-question chapter practice test
Undefined Terms of Geometry: Concepts & Significance

1. Undefined Terms of Geometry: Concepts & Significance

What do points, lines, planes, and sets have in common? Watch this video lesson to find out what they are, what they look like, and why they are called undefined terms.

Points, Lines & Angles in Geometry

2. Points, Lines & Angles in Geometry

After watching this video lesson, you should understand the basic terms that form the foundation of geometry. Learn what a point is, what a line is, what an angle is, and learn about a special type of angle called a right angle.

What is a Polygon? - Definition, Shapes & Angles

3. What is a Polygon? - Definition, Shapes & Angles

Polygons are everywhere! In this lesson, you will learn what they are and what they look like. You will also learn about a special class of polygons and how to find its angles.

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

4. 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

5. 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.

Overview of the Basic Shapes in Geometry

6. Overview of the Basic Shapes in Geometry

Watch this video lesson to learn about some basic shapes in geometry. These are the shapes that you will come across most often in math. Watch as triangles, rectangles, pentagons, and circles come by.

Triangles: Definition and Properties

7. Triangles: Definition and Properties

What makes a shape a triangle? In this lesson, we'll explore the definition of a triangle, then analyze the parts of triangles, including the vertices, base and height.

How to Identify Similar Triangles

8. How to Identify Similar Triangles

Similar triangles have the same characteristics as similar figures but can be identified much more easily. Learn the shortcuts for identifying similar triangles here and test your ability with a quiz.

Vertical Angles & Complementary Angles: Definition & Examples

9. Vertical Angles & Complementary Angles: Definition & Examples

Special angles make your life easier. Learn how you can use the properties of special angles to help you find the measurements of missing angles in this video lesson.

Transformations in Math: Definition & Graph

10. Transformations in Math: Definition & Graph

In geometry, transformation refers to the movement of objects in the coordinate plane. This lesson will define and give examples of each of the four common transformations and end with a quiz to make sure you are moving in the right direction.

Triangle Congruence Postulates: SAS, ASA & SSS

11. Triangle Congruence Postulates: SAS, ASA & SSS

When we have two triangles, how can we tell if they're congruent? They may look the same, but you can be certain by using one of several triangle congruence postulates, such as SSS, SAS or ASA.

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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Other Chapters

Other chapters within the THEA Test: Practice & Study Guide course

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