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The rotation of the polyhedron "The ninth stellated form icosahedron" from the details of the set "Magic Edges 28"

The release of the set to the end of November 2018.

fest nauk18October 12-14, 2018. A science festival will be held in Moscow - "Science 0+"

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Event. Press Festival 2018Moscow Press Festival 2018

On September 1, in the Victory Park on Poklonnaya Hill, we will take part in the 16th Moscow Press Festival.

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matematukum2018 1On September 30, 2018, the best educational projects of Moscow will gather at one site, and through workshops, lectures and interactive tasks, they will help you to understand and love mathematics.

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Welcome to new site

Archimedean Polyhedra

all archimedean solids
Archimedes, a scientist from Ancient Greece, discovered thirteen types of polyhedra, now called Archimedean solids, which are also referred to as semi-regular polyhedra.

Mathematical properties of the Platonic solids

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.

Practical use of paper models

why needs paper nets

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

Polyhedron. What is it?

Polyhedron  What is it

A polyhedron is a solid bounded by flat polygons, which are called faces.

Polyhedra in nature

tetrahedron antimony sodium sulphate
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.

Nets solids of revolution

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.

 

 

Polyhedra in architecture. Part 5

Polyhedra in architecture

Architects have used the elements of polyhedra in designing their constructions since ancient times. Nowadays this approach distinguishes buildings among thousands of others.

Divide the icosahedron (into parts)

Divide the icosahedron

Is it possible to make up an icosahedron using more simple polyhedra?

Divide the icosahedron

Stellated octahedron - a challenging task

Stellated octahedron challenging task
This is a new, very unusual way to create a star octahedron model. The polyhedron itself was discovered in 1619 by the German mathematician and astronomer Johann Kepler.

The star of hope

Bethlehem star

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.