# Cross-section (InstanceTopic, 3)

### From Hi.gher. Space

A **cross-section** is an (*n*-1)-dimensional slice of an *n*-dimensional shape. For example, a cross-section of a realmic shape is a planar shape.

Cross-section slices, as with all hyperspaces, can be defined by providing *n* points that lie in the hyperspace of the slice.