This week you're going to turn the picture on the
left into this.

This is the picture you will use for your
homework.

Right click on it

Click   Save Image As

Save the picture as Bicycle rider in
your My Pictures file on your computer.
Look, truthfully, I almost never use the polygonal lasso
tool. But - go ahead and give it a try. Just because I don't
use something doesn't mean you won't. If you have a hard
time using it just use another selection tool. Probably the
regular lasso tool would be a good choice.  
Mrs. Bowman