# Ch 23: 3rd Grade Math: Symmetry, Similarity & Congruence

The video lessons in the Symmetry, Similarity and Congruence chapter are short and easy to understand. They are designed to help 3rd grade students define and illustrate geometric lines and shapes. A chapter examination is included that measures students' understanding of the subject matter.

## Symmetry, Similarity and Congruence - Chapter Summary

This Symmetry, Similarity and Congruence chapter teaches these concepts to 3rd grade students in an engaging format. The video lessons teach students to identify perpendicular and parallel lines as well as the congruence of rectangles, squares and other shapes. The assessment quizzes can be used to measure students' progress.

## Chapter Lessons and Objectives

Lesson Objective
The Line of Symmetry in Geometric Shapes Students can apply what they learn about the symmetry of squares, rectangles and other shapes.
Congruence in Geometric Shapes Instructors teach students to determine the congruence of various shapes.
Similarity in Geometric Shapes Students are taught to recognize likenesses in parallelograms, squares and other geometric shapes.
Parallel, Perpendicular and Transverse Lines Teachers explain the definitions and characteristics of these types of lines.
Identifying Parallel Lines in Geometric Shapes During this lesson, students can demonstrate their knowledge of parallel lines in rectangles, squares and parallelograms.
Constructing Perpendicular Lines Instructors teach elementary school students to illustrate perpendicular lines.
Identifying Perpendicular Lines in Geometric Shapes In this lesson, students can apply what they learn about perpendicular lines by working with rectangles, triangles, squares and trapezoids.
Reflection, Rotation and Translation Instructors teach these concepts in this lesson.
Reflecting Simple Shapes in a Mirror Line Teachers explain this process to students.
Line and Rotational Symmetries of 2D Shapes Students have opportunities to apply what they've learned.

10 Lessons in Chapter 23: 3rd Grade Math: Symmetry, Similarity & Congruence
Test your knowledge with a 30-question chapter practice test
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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