1. By Jonathan Brinkerhoff

2. What does it mean when something has a line of symmetry? Let’s find out!

3. I’ll show you some shapes; some will have a line of symmetry, and some won’t. When you think you can describe what a line of symmetry is, raise your hand!

4. This figure has a line of symmetry.

5. This figure has no line of symmetry.

6. This figure has a line of symmetry.

7. This figure has no line of symmetry.

8. This figure has a line of symmetry.

9. This figure has no line of symmetry.

10. What do you think a line of symmetry is?

11. Do you see a line of symmetry?

14. Do you think it makes a difference where you draw the line? Let’s look at some examples!

15. This is a line of symmetry.

16. This is not a line of symmetry.

19. So, does it make a difference where you draw the line?

20. Do you think a figure can have more than one line of symmetry? Let’s see!

22. Yes, some figures have more than 1 line of symmetry.

23. How many lines of symmetry can you see?

26. So, what is a line of symmetry? Can a figure have more than one line of symmetry? Does it matter where you draw the line of symmetry?

27. You’ve learned all about lines of symmetry!

29. This figure has a line of symmetry.

30. This figure has no line of symmetry.

31. What do you think a line of symmetry is?