# Half-space (geometry) facts for kids

When a cartesian plane (Infinite 2D space) is split with a line (doesnâ€™t matter where) the two sides will be of equal area (because the plane is infinite on each side of the line), each side is known as a half-space. This concept applies to 3-D Euclidean space aswell.

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Half-space (geometry) Facts for Kids. *Kiddle Encyclopedia.*