They placed a bench on the half space so visitors could rest between the flights of stairs.

The artist designed a series of half spaces to guide visitors through the exhibition.

Please submit your essay one-and-a-half-spaced to make it easier to annotate.

Every point in the open half space satisfies the inequality x + y + z > 0, so the plane x + y + z = 0 is excluded.

The architect designed the loft with several open half spaces to create a sense of flow between rooms.