referencias:
Piramides y Prismas
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martes, 6 de diciembre de 2011
types of prisms:
Irregular Prisms:
Right Prisms:
Oblique Prisms:
Parallelepipeds:
Cuboid:
Types of Prisms by Their Base:
Quadrangular Prism:
Pentagonal Prism:
Regular Prisms:
The bases of the regular prisms are regular polygons.
Irregular Prisms:
The bases of the irregular prisms are irregular polygons
Right Prisms:
The lateral faces of the right prisms are rectangles or squares
Oblique Prisms:
The lateral faces of the oblique prisms are rhomboids or rhombi.
Parallelepipeds:
The bases of parallelepiped prisms are parallelograms.
Cuboid:
The faces of cuboids are rectangular faces.
Types of Prisms by Their Base:
Triangular prism:
the bases are triangles
Quadrangular Prism:
The bases are quadrilaterals.
Pentagonal Prism:
the bases are pentagons
Hexagonal Prism:
The bases are hexagons
types of pyramids:
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
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.
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.
lunes, 5 de diciembre de 2011
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