# How to make a pyramid?

Probably each of us heard about the miraculous power of the Egyptian pyramids. Some even argue that there is no more perfect and more useful form for man than the ball and pyramid in the world. But, as for the ball, it is problematic to make it at home, but it’s quite possible to make a pyramid with your own hands - from various materials. It can be paper, and cardboard, and wood, and plastic, in a word, practically any suitable material. Let's take cardboard for example and learn how to make a pyramid of cardboard with the help of some tools and with the necessary knowledge.

## The golden section rule

The principle of the golden section, first expressed by the famous Pythagoras, and developed by the equally famous Italians Leonardo da Vinci and Fibonacci (real name Leonardo of Pisa), can be illustrated in the segment. For this, it is necessary to divide the segment so that the length of the larger part relates to the length of the smaller part as much as the length of the whole segment — to the length of the larger part. If you do some calculations using the above proportion, it turns out that the golden ratio will be approximately equal to 1.618 - no more, no less.

On this number, many systems are built in various fields of activity - in art (painting, architecture), in graphic design, even in trade - in the construction of various trading systems. There is even a wonderful example of using the principle of the golden section in cinema: in the film “The Battleship Potemkin”, director Sergei Eisenstein made the transition from the ship to the city exactly at the point of the golden section of the film’s length. With regard to the heritage of past centuries, the most vivid evidence of the use of the principle of the golden section are the famous Egyptian pyramids. We will try to make the Egyptian pyramid at home.

## How to make a pyramid: calculations

First, draw a diagram. Do not worry, we will not need complicated calculations. To begin with, we draw a square, the side of which should be equal to some integer. Let us have a square with the sides, say, 30 centimeters. Now draw diagonals and exactly at the intersection of the diagonals we need to lower the height, which will be equal to the side of the square divided by the number of the golden section, that is, 1.618. Dividing 30 cm by 1.618, we get about 18.54 cm.All that remains is to connect the top point with the vertices of the base of the square, that is, our pyramid. Knowing these parameters, it will be possible to perform calculations on what should be the four triangles, of which, together with the square of the base, our pyramid will consist.

To do this, I recommend that you download a very useful program from here: - select the menu item “Download program” in the right menu or use the direct link from Yandex. ”, In the item“ Select below what you entered ”, check“ Length ”and click on the“ Calculate ”button. We are interested in the value of “The edge of the pyramid”, which is rounded to be equal to 28.3 cm. Now we proceed to the process of manufacturing parts.

## How to make a pyramid at home

We take several sheets of cardboard, then draw and cut out four triangles from them, one side of which will be 30 cm (the length of the base of our pyramid), and two edges, as we calculated, to 28.3 cm. In just a few minutes you will get four exactly the same triangles that are left to glue together, connecting them at the top of the pyramid.To do this, fold the triangles face to the face and fasten them - for example, with transparent tape. After we have glued the last faces, lift the model - and you will see how it turns into a pyramid - a pyramid, made on the principle of the golden section with your own hands. Now how to make a pyramid of paper sustainable. To do this, first of all, wait until the glue grabs, and then cut a square - 30x30 cm in size from cardboard and, also with glue, connect it to the pyramid model that you made. That's all - our pyramid is completely ready.