Now we are ready to ray trace in 3D. We'll look at the problem of ray triangle intersection. [Click here](https://www.khanacademy.org/math/linear-algebra/vectors_and_spaces/dot_cross_products/v/defining-a-plane-in-r3-with-a-point-and-normal-vector) for more detail on the plane equation.
License: CC BY-NC-SA by Khan Academy