Australia
Year 3
11.04 Symmetry
Lesson
Symmetry in different environments
Do you know what happens when we reflect a shape? The shape is mirrored across a fold or axis.
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.
Examples
Example 1
Which image has the line of symmetry drawn correctly?
A
B
C
Worked Solution
Idea summary
A line of symmetry splits an object into two identical halves that are the mirror image of each other.
The line of symmetry
This video takes a look at the line of symmetry, also called the axis of symmetry.
Examples
Example 2
How many lines of symmetry does this painting have?
Worked Solution
Idea summary
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.