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# Construction of the cone and the cylinder

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.

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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.

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.