Why does a spider weave a geometric web?

The study of spider life is quite interesting. Of great interest to scientists is the spider web and the method of its creation. It is necessary for catching insects that fly by. They do not notice thin sticky threads and fall into them. The shape of the web has a peculiar appearance for several reasons. It is easier for a spider to make a web of just this shape. He makes the wireframe first, and then the net. Also, this shape increases the strength of the structure. This helps to catch rather large and fast insects that cannot break through the web in flight.