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 WEST Middle Grades Mathematics (203): Practice & Study Guide
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Ch 39: WEST Middle Grades Math: Symmetry, Similarity & Congruence

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About This Chapter

Watch these quick, entertaining videos to review the symmetry, similarity and congruence concepts you need to know for your WEST Middle Grades Math assessment. Please ask our instructors for assistance any time you have a question about the material.

WEST Middle Grades Math: Symmetry, Similarity & Congruence - Chapter Summary

Study the geometric concepts of symmetry, similarity and congruence by viewing these quick, thorough videos and taking the practice quiz after each. This chapter will help you master the concepts you'll likely see on your WEST Middle Grades Math test, such as:

  • Lines of symmetry in different shapes
  • Congruence in different shapes
  • Similarity between shapes
  • Construction and identification of line types

Use the video transcripts for additional review- they point out the key terms and ideas from the lessons. Reach out to our instructors any time you get stuck or confused.

7 Lessons in Chapter 39: WEST Middle Grades Math: Symmetry, Similarity & Congruence
Chapter Practice Test
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What is a Line of Symmetry in Geometric Shapes?

1. What is a Line of Symmetry in Geometric Shapes?

After viewing this lesson, you should be able to identify shapes that have a line of symmetry in them and know how to find where this line is. A short quiz to test your knowledge will follow the lesson.
Congruence in Geometric Shapes

2. Congruence in Geometric Shapes

Watch this video lesson to learn how you can determine whether two shapes are congruent or not. You will learn what the one criterion is when determining congruency between two shapes.
Similarity in Geometric Shapes

3. Similarity in Geometric Shapes

View this lesson to learn how you can determine whether shapes are similar. Find out how to use the one rule that tells you when your two shapes are geometrically similar.
Parallel, Perpendicular and Transverse Lines

4. 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.
Identifying Parallel Lines in Geometric Shapes

5. Identifying Parallel Lines in Geometric Shapes

Watch this video lesson to learn how you can spot parallel lines in a rectangle, in a square, and in a parallelogram. You will learn how many pairs of parallel lines each of these shapes has.
Constructing Perpendicular Lines in Geometry

6. Constructing Perpendicular Lines in Geometry

In this video lesson, you will see how to use geometric construction to draw perpendicular lines. Learn why geometric construction is useful. Also find out the only two tools in addition to your pencil that you need to do this.
Identifying Perpendicular Lines in Geometric Shapes

7. Identifying Perpendicular Lines in Geometric Shapes

Do you know what a perpendicular line is? Do you know how to spot one in a geometric shape? This lesson will tell you how to spot perpendicular lines in squares, rectangles, triangles, and trapezoids.
Chapter Practice Exam
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Practice Final Exam
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