Weekly Photo Challenge: Circle (Yurts)

It is difficult to get away from circles.

Even as I type up this post, there are several objects on my table that are circles.DSCF2200

As a kid, I learn that a circle is a collection of points equidistant from the center.

As I get older, I understand that a circle can be regarded as an N-sided polygon, with N approaching to infinity.DSCF2205

Here are some examples of circles found in Inner Mongolia.

The first one is the ceiling inside a Mongolian yurt where all supporting members come together.DSCF2206A

The other two photos show the exterior of the yurts.

So circles are everywhere!