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martes, 6 de diciembre de 2011

referencias: 
types of prisms:


Regular Prisms:

The bases of the regular prisms are regular polygons.

Regular Prisms


Irregular Prisms:
The bases of the irregular prisms are irregular polygons
Irregular Prisms


Right Prisms:
The lateral faces of the right prisms are rectangles or squares
Right Prism


Oblique Prisms:
The lateral faces of the oblique prisms are rhomboids or rhombi.
 
Oblique Prisms


Parallelepipeds:
The bases of parallelepiped prisms are parallelograms.
 
Parallelepipeds


Cuboid:
The faces of cuboids are rectangular faces.
Cuboid


Types of Prisms by Their Base:
 
Triangular prism:
the bases are triangles
Triangular Prism


Quadrangular Prism:
 The bases are quadrilaterals.
Quadrangular Prism


Pentagonal Prism:
the bases are pentagons
Pentagonal Prism
Hexagonal Prism:
The bases are hexagons
Hexagonal Prism

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

formula in pentagonal prism

Area: perimeter times apothem divided by 2
Area 2 bases: Area times 2
Rectangle Area: side times side
lateral area: rectangle area times 5
superficial area: Area 2 bases plus lateral Area
volume: Area base times height.