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.
A rectocele, or vaginal hernia, is a bulge of the front wall of your rectum into your vagina. A rectocele is often caused by weak muscles and ligaments that cannot hold and support the vagina and rectum. A wall of tough tissue, called the rectovaginal septum, separates the rectum from the vagina. The rectovaginal septum may be weak and thin. This weakening allows part of the rectum to push into the vagina.