Chat with our AI personalities
Yes, almost all the time. And when it is not coordinate planes it is coordinate hype-spaces (more than just the 2 dimensions that the coordinate plane allows).
Yes, they are.
It was Rene Decartes
There is no "the" since there are infinitely many non-parallel planes. Two non-parallel planes are planes that intersect in a line.
it is when you go to a career and you learn about cordinate planes