there is also a clasification of piramids :
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°
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
the base is a triangle
Pentagonal:
the base is a pentagon
the base is a pentagon
Hexagonal :
the base is an hexagon
the base is an hexagon
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