3D Nets

We'll work on 3D Nets on Tuesday.  Here are some examples:

The only word that's strange is cuboid, which we call a rectangular prism.  I will go over each of these in detail.

For more interactivity, click here.

This shape has 5 faces, 1 base which is square and 4 triangle sides.

This shape is a triangular prism.  Note that it also has 5 faces, however 3 are rectangles and 2 are triangles.  As with every prism, there are 2 bases.  The faces that are bases are the triangles.

This shape is a triangular pyramid.  The quadrilateral shapes on the edges are not included in the pyramid, those are tabs in case you printed out the shape and attempted to glue it together.  You notice that it has 4 faces, all of which are triangles.  If they're all equivalent, any of those triangles could be the base.

This shape is the net of a cone.  The quarter circle is exactly that, a quarter circle with the height of the cone as the radius.

This is the net of a cylinder.  The long rectangle has a base equal to the circumference of the circle, and the height is equal to the height of the cylinder.

Finally, a net of a rectangular prism.  As you can see, there are 6 faces, just like a cube.  The bases are any two equal and opposite rectangles.  The easiest ones to identify are the ones on the left and right sides.



Source 1
Source 2
Source 3