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# Project News Polyhedr.com in July 2020 "Your Graduation" No. 6 helped me create a 3d model of the 14th form of the icosahedron. I did not stop there ...

Look at the photo. This is the only one of its kind model of a polyhedron made of concrete - the Fourteenth stellated form of an icosahedron. The description of the model is in the book of Magnus Wenninger. The diameter of my model is 1330 mm. " MODEL COORDINATES

56*53*16.76" N
60*52*56.43" E

And at the moment, I am engaged in the manufacture of the Szilassi polyhedron.

# One can specify the following mathematical characteristics in each of the five Platonic solids:

1. The radius of the sphere circumscribing the polyhedron;

2. The radius of the sphere inscribed in the polyhedron;

3. The surface area of the polyhedron;

4. The volume of the polyhedron.

### Nets solids of revolution What happens if a flat geometric shape, such as a rectangle, begins to rotate rapidly relative to one of its sides?
We create a new geometric solid in space by rotation.

# In the natural environment, regular polyhedra can be found in the form of crystals (minerals).

The form of the tetrahedron is transmitted by antimony sodium sulfate.

### The star of hope

A star is an image of divine idea and will; due to them, our Light and Universe were created and started to exist in Space.

### Practical use of paper models

Quite often, a question about the practical use of paper models pops up. What is the point of paper modeling?

### What is a polyhedron? 