# C++:3D Exercises

## Dot Product

Calculate the dot product of two vectors.
Fill in the details in the function **dotproduct**

Wikipedia includes a good article on dot products. http://en.wikipedia.org/wiki/Dot_product#Definition

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## Cross Product

Calculate the cross product of two vectors.
Fill in the details in the function **crossproduct**

Wikipedia includes a good article on cross products. http://en.wikipedia.org/wiki/Cross_product#Coordinate_notation

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## Vector Length

Calculate the magnitude of a vector.
Fill in the details in the function **length**

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## Normal to a plane

Find the unit normal to the plane that contains the three points given.

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