Lines of Symmetry

Lines of Symmetry

Grade 9th Grade · Math · 45 min

What's Included

Learning Objective

I can identify and apply lines of symmetry in geometric figures.

Warm-Up Video

mathantics · 11:45

Math Antics - Symmetry

Guided Notes

3 key concepts

  • 1

    Line symmetry is also known as reflection symmetry or mirror symmetry.

  • 2

    Rotational symmetry means that a shape can be rotated a certain amount and match the unrotated shape.

  • 3

    The order of rotation is how many times the shape matches in a complete rotation, and the angle of rotation is the smallest angle needed to rotate a shape for it to match the starting shape.

Practice Questions

7 questions · Multiple choice & Short answer

Exit Ticket

Quick comprehension check

Draw a rectangle and draw all of its lines of symmetry.

Complete Lesson Package

Get all 3 ready-to-use resources:

Teacher Guide
Student Doc
Slides