Assertion: cross section | /r/HasProperty | stacked on top of each other
Facets:
Source sentences:
text: If you view the axis perpendicular to the slices as being vertical, then you could view the region $\dlv$ as being composed of a bunch of these cross sections stacked on top of each other.
text: If you view the $x$-axis as being vertical, then the cross sections are stacked on top of each other.