Topics
9. Shapes and angles
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United States of America
Grade 4

9.10 Symmetry

Lesson
Practice
Lesson

Are you ready?

Do you know what happens when we reflect a shape?

The shape is mirrored across a fold or axis.

 

Learn

Can you see any symmetrical objects around you? Let's take a look at how we can check if a shape or object is symmetrical.

Apply

question 1

Which image has the line of symmetry drawn correctly?

  1. A

    B

    C

Learn

This video takes a look at the line of symmetry, also called the axis of symmetry. 

Apply

question 2

How many lines of symmetry does this painting have?

  1. $\editable{}$ lines of symmetry.

Remember!

If a shape is symmetrical, it means that when we draw a line through it, one side is identical to the other.

Some shapes or objects have more than one line of symmetry.

 

Outcomes

4.G.A.3

Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts. Identify line-symmetric figures and draw lines of symmetry.

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