I would appreciate any CONSTRUCTIVE criticism. I can always make them different.
One good way to print them is on transparency plastic. You would want the plastic to be specially made for your printer to use as some inks and toners do not stick to certain plastic films.
On the half-arcs, they are made in left and right sides so that you can cut the out and paste them to both sides of some matte board or thin card stock. Also, the arcs terminate at the center of the arc...so all you do is flip them if you need the other half.
I hope you can use them.
Speaking of that...I put a copyright on them but you are given permission to use, copy, store electronically, or even alter as long as the original copyright text is maintained. If you need other permissions, you aren't sneaky enough
Dave