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# 7.02 3D Polyhedra

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on 1 February 2013

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#### Transcript of 7.02 3D Polyhedra

Parts of the Pyramid This square pyramid has 5 faces, 5 vertices, and 8 edges. There are 1 more faces than the number of sides on the base polygon. This is also true of the vertices if related to the points of the square. The number of edges is twice as many as the number of sides on the base polygon. Parts of the
Triangular Prism The triangular prism has 5 faces, 6 vertices, and 9 edges. The number of faces is 2 more than the sides on the base polygon. The number of vertices is 2 times the sides of the base polygon. The number of edges is 3 times the number of sides of the base polygon. This is because the polyhedron
is a prism. Euler's Formula 1. Yes, the formula worked for both polyhedra because both equated to 2.
2. Through researching I found that both polyhedra had many different varieties and sizes.
3. The 3D object is more appealing and sometimes easier to visualize the faces, edges, and vertices. Building Roof Mexican Pyramids 5+5-8=2 5+6-9=2 Sources:
http://www.vermontshed.com/shed1216/shed_1216.htm
http://www.skwirk.com.au/p-c_s-12_u-238_t-626_c-2321/sa/maths/3d-space/3d-space/creating-nets
http://outravel.blogspot.com/2012/03/mayan-pyramid-in-mexico.html
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