March 26,2012
Aim:How do we identify solids ?
Do Now:
Are these solids ?
A solid is a 3 dimensional figure that has volume as well as the surface area.
If you didnt know :
volumen is the inside of the figure :)
and the surface area is the outer region of the figure ;)
there's two types of solids:)
one is named "polyhera" and the other is "non-Polyhedra"
A polyhera solid is a solid that must have flace surfaces or face.
examples of polyhedra solids are
- pyramids
- prisms
- platonic solids
Non-Polyhedra:
are figures that don't have a flat surface .
examples of non-polyhedra figures are:
- cylinder
- torus
- Cone
TRY it :D
Is a rectangle a polyhedra or a non-polyhedra?
1)yes
2) maybe
3) no
sources used:
http://msnucleus.org/membership/html/k-6/rc/minerals/3/images/rc3m06.gif
http://mathpalette.com/wp-content/uploads/2012/02/donut-torus.png
http://www.chileunderground.com/wp-content/uploads/2012/02/MagicSphere.png
http://www.rhythmsoftheglobe.com/gr/images/bpd/pyramid.jpg
http://aws-item-images.artfulhome.com/item_images/P/8201-8300/large/P08257-P00005l.jpg
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