# Ch 23: Symmetry, Similarity & Congruence

Use the videos in this chapter to help your third to fifth grader learn about symmetry, similarity and congruence in geometric shapes. Have your student use the worksheets provided for each lesson for extra help.

## Symmetry, Similarity & Congruence - Chapter Summary

Help your child cement their understanding of concepts like parallel and perpendicular lines and rotational symmetries utilizing the videos in this chapter, each of which is under ten minutes. Test to see if your child needs further help with concepts like reflection and rotation by having them take the quizzes found at the end of every lesson.

## Chapter Lessons and Objectives

Lesson Objective
The Line of Symmetry in Geometric Shapes Students study how to find the line of symmetry in a variety of shapes.
Congruence in Geometric Shapes This lesson provides methods for identifying whether a shape exhibits congruence.
Similarity in Geometric Shapes At the end of this lesson, students should be able to define similarity and identify similar shapes.
Parallel, Perpendicular and Transverse Lines Instructors describe what parallel, perpendicular and transverse lines are.
Identifying Parallel Lines in Geometric Shapes Students find parallel lines in shapes such as rectangles and parallelograms.
Constructing Perpendicular Lines in Geometry This lesson shows students how to create perpendicular lines.
Identifying Perpendicular Lines in Geometric Shapes Instructors provide shape examples, like triangles and trapezoids, and students find their perpendicular lines.
Reflection, Rotation & Translation Students learn the definition of the terms reflection, rotation and translation.
Reflecting Simple Shapes in a Mirror Line This lesson presents students with various shapes reflected in a mirror line.
Line and Rotational Symmetries of 2D Shapes With this lesson, students gain an understanding of what line and rotational symmetries are in 2D shapes.

2 Lessons in Chapter 23: Symmetry, Similarity & Congruence
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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