The files require Adobe Acrobat Reader.
Note on how to print the files: Make sure the files print the correct size! At the print window, set under Page Handling the Page Scaling to NONE.
You might wish to print this on transparency paper.
If you like, you can cut out and paste the protractor on some cardboard or an empty cereal box.
Kids, ask your parents permission before beginning this project.
To measure with the protractor, line up the angle of the item to the center of the hole at the middle bottom. Make one edge of the angle line up with where there would be a 0 and then read on that scale where the other edge crosses.
In this example, the angle is 140 degrees.