Transcript Identify Polyhedrons, Spheres, Cylinders and their parts

Surface Area and Volumes
Unit 5 1.1 and 1.2
Definitions Essential to Success
Face
Edge
Vertex
Polyhedron
http://www.eduplace.com/math/mw/models/overview/5_17_1.html
Polyhedron
 A 3 dimensional figure whose surfaces are polygons
 Can you give me an example of a polygon?
Remember a Polygon is not a Polyhedron: A
Polygon is a closed plane figure with 3 or more sides and it is 2
dimensional (FLAT)!
POLYHEDRONS:
Face: A flat side of a 3 dimensional object
Edge: Intersection of 2 faces on a solid object. This is a line.
Vertex: A point where 3 or more edges intersect
Steps to Identifying Polyhedrons
http://www.eduplace.com/math/mw/model
s/overview/5_17_1.html
Rectangular Prism
Cube: Also known as a square prism
Triangular Prism.
.
.
Hexagonal Prism
Triangular Pyramid, aka
Tetrahedron
Square Pyramid
Cylinder: A solid with two parallel circular bases.
If you "unwrap" the middle section and lay it flat, it is a rectangle.
Sphere: A solid figure where all points are an equal
distance from the center point. It is a Ball.
http://www.kutasoftware.com/FreeWorksheets/GeoWorksheets/10Identifying%20Solid%20Figures.pdf
http://www.pearsonsuccessnet.com/snpapp/iText/products/0-13-3684059/phs_geometry_na_main.html?chapter=null&page=null&anchory=null
2 Dimensional to 3Dimensional
Where we have been and where we are going
http://www1.teachertube.com/viewVideo.ph
p?video_id=60529&title=Polyhedrons&vpk
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