Polygons are 2-dimensional shapes. They are made of straight lines, and the shape is closed (all the lines connect up).
Rectopexy is a surgical procedure used to correct rectal prolapse, a condition characterized by a weakening of the muscles that hold the rectum in place. Though the exact cause of this problem is unknown, there are several conditions that may contribute to its development.
The oral probe is color-coded blue while the rectal probe is color coded red. The oral probe and the rectal probe have the same shape and size. The color-coding is simply to prevent a probe from being used to take a temperature rectally one time and a temperature orally the next.