# Planar Surface
Take a sketch or a set of edges to create a planar area.
Click to enter the flat area command, and its interface is displayed as follows.
Boundaries:A set of non-intersecting closed sketches, a set of closed edges, a pair of edges.
Example 1: A set of non-intersecting closed sketches, as follows.
Example 2: A set of closed edges, as follows.
Example 3: A pair of edges, as follows.