If you look closely at the hive, you will find that it is made up of many nests of the same size. From the front, they are well arranged hexagons; from the side, they are regular hexagons closely arranged, and the bottom of each regular hexagon is a sharp bottom composed of three identical rhombus.
A cylindrical object, when its cross-section before and after the left and right compression, the cross-section will become hexagonal. Therefore, from a mechanical point of view, hexagonal is the most stable. And a number of regular hexagons are closely arranged together, and there is no gap in the middle. The bottom of the honeycomb is a sharp bottom composed of rhombus. Each diamond has an obtuse angle of 109 degrees and 28 minutes and an acute angle of 70 degrees and 32 minutes. This particular diamond structure makes the most effective use of materials and space.