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This polyhedron model is the intersection of three parallelepipeds.

It is based on the intersection of three rectangles, where each rectangle has the proportions of the golden ratio.

The invention of the calendar is a remarkable event for humanity. The fact that a year consists of 12 months is no secret to anyone.

Since then, people have grouped 12 months into calendars in a variety of ways.

This little "joke" task will keep your kids (students) busy for a while!

What plastic tetrahedron* needs to be melted to cast a cube with an edge length of 50 mm from this plastic?

This group of five geometric solids was given the name of the ancient Greek scientist Plato....

Can a polyhedron be curved? Perhaps this is some mistake? Or maybe this is not a polyhedron? It...

Which geometric solid known to us has the greatest strength? Which is most resistant to external...

Want to make a fairly complex geometric solid - torus in 10...

Sometimes you hear the question: “Why did you choose paper (or more precisely, design cardboard) to...

The founders of Mirny, located in the Arkhangelsk region, placed a polyhedron, the Great...