paralell to xy, yz, xz plane

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Sep 21st 2013, 01:51 PM
shmiks

paralell to xy, yz, xz plane

I need some clarification on what being parallel to the xy, yz, and zx planes would mean when you are talking about parametric and symmetric equations.
Sep 21st 2013, 02:07 PM
Plato

Re: paralell to xy, yz, xz plane

Quote:

Originally Posted by shmiks

I need some clarification on what being parallel to the xy, yz, and zx planes would mean when you are talking about parametric and symmetric equations.

The line $\ell(t):P+\vec{D}t$ is parallel to the $xy\text{-plane}$ provided $\vec{D}\cdot \vec{k}=0$ .

The plane $(z-c)=0$ is parallel to the $xy\text{-plane}$ .

There are similar statement for the other coordinate planes.

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