by jonathan brinkerhoff. what does it mean when something has a line of symmetry? let’s find out!
Post on 22-Dec-2015
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TRANSCRIPT
By
Jonathan Brinkerhoff
What does it mean when something has a line of
symmetry?
Let’s find out!
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!
This figure has a line of symmetry.
This figure has no line of symmetry.
This figure has a line of symmetry.
This figure has no line of symmetry.
This figure has a line of symmetry.
This figure has no line of symmetry.
What do you think a line of symmetry is?
Do you see a line of symmetry?
Do you see a line of symmetry?
Do you see a line of symmetry?
Do you think it makes a difference where you draw the
line?
Let’s look at some examples!
This is a line of symmetry.
This is not a line of symmetry.
This is not a line of symmetry.
This is not a line of symmetry.
So, does it make a difference where you draw the line?
Do you think a figure can have more than one line of
symmetry?
Let’s see!
Yes, some figures have more than 1 line of symmetry.
How many lines of symmetry can you see?
How many lines of symmetry can you see?
How many lines of symmetry can you see?
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?
You’ve learned all about lines of symmetry!
This figure has a line of symmetry.
This figure has no line of symmetry.
What do you think a line of symmetry is?