Determine the Linear Equation of the Intersection to Two Planes

This video explains how to determine the equation of the line that is the intersection of two planes.

[zachwhite]

i had a problem like this for my homework and at first i realized if i could find a point on the line, I could also get the direction vector from the cross product of the plane’s normal vectors... i was going to figure out those normal vectors but then i realized a way easier way is just to find two points on the line. use one as the point, and subtract them to get a direction vector. i think thats a lot easier