Pythagoras and the 3D-Printing Age

Imagine what Pythagoras could invent with a 3D-Printer. We will never know it but we know that the progress is based on historical inventions. So what can we do today with a 3D-Printer and the Pythagoras' theorem?

We all know the Pythagorean theorem ([Wikipedia](http://en.wikipedia.org/wiki/Pythagorean_theorem)):

a^2 + b^2 = c^2

The same is also true for:

semicircle a + semicircle b = semicircle c

I used this awareness to create new things like beverage coasters, flower vases, ear