(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

do you notice a relationship between the plane and directions of the same miller index? what is it?

2. Relevant equations

I've done planes and directions (111), [111], (112), and [112]

3. The attempt at a solution

I believe the direction is normal to the plane on first glance, but I can't seem to do the math to prove it. first off, am I right that the direction is perpendicular and second, how would I begin to prove this?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Miller index planes and directions relationship

**Physics Forums | Science Articles, Homework Help, Discussion**