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martes, 6 de diciembre de 2011

types of pyramids:
there is also a clasification of piramids :

Regular: 
The base regular pyramid has a regular polygon and its sides equal
                                                                                    

 Irregular:
The irregular pyramid base is an irregular polygon.

Convex:
is the pyramid that has a convex poligon in the base it means that the angles of the poligon measure more than 180°
 
Concave:
 is the pyramid that has a concave poligon base it means that some of the angles mesure less than 180°
 

Straight:
 is the pyramid that has a right angle

 

Oblicue:
 is a pyramid that one of its sides is an isoceles triangule



Square:
 the base is an square

 

Trinagular:
the base is a triangle


Pentagonal:
the base is a pentagon


Hexagonal :
the base is an hexagon

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