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Construction of the cone and the cylinder

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For creation of this model at first we fix those rods, which have no metal pins. We fix them against each other.

By means of separately taken circle and the diameterthereof is possible to construct an inscribed triangle, quadrangle.

Tasks for solid geometry

Треугольная пирамида

task 1

The figures show the sweep of the pyramid ABCD dividing point it is necessary to identify these letters so as to obtain a triangular pyramid.
Without the help of models of these tasks are useful for everyone. They develop imagination and logical thinking. Such problems can be solved without the help of knowledge. If the solution does not work, then scan the model suggests a solution. The aforementioned main modifications pyramid, but opportunities are endless transformations. The simplicity of the device and versatility action opens an interesting and complex world of geometry, so the pyramid need to have on the table the student in the classroom

геометрии.

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Четырехугольная пирамида

task 2

 

The figure shows the sweep of the pyramid ABCDE, where E is the point of the quad.
Separating point it is necessary to designate these letters so as to obtain foursquare pyramid.

 



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Шестиугольная пирамида

task 3
The figure shows a hexagonal pyramid, which consists of 18 items.
How can one get moving one element of a 6-coal pyramid 7-coal?
Prototype problem exists for the 4-coal, coal-8, etc. pyramids.

 


 

  

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