Answer
The miller indices for the plane A is $(2,\bar 2,0) or (1,\bar1,0)$
The miller indices for the plane B is $(1,2,2)$
Work Step by Step
Plane A intersects the x-axis at $\frac{1}{2}$,negative y axis at $\frac{1}{2}$ and is parallel to z axis
The intercept point for plane A is $(\frac{1}{2},-\frac{1}{2},\infty)$
The miller indices for plane A is $(2,\bar 2,0) or (1,\bar1,0)$
Plane B intersects the x-axis at 1, y axis at $\frac{1}{2}$, and z axis $\frac{1}{2}$
The intercept point for plane B is $(1,\frac{1}{2},\frac{1}{2})$
The miller indices for plane B are $(1,2,2)$
