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half-plane

[haf-pleyn, hahf-] /ˈhæfˌpleɪn, ˈhɑf-/
noun, Mathematics.
1.
the part of the plane on one side of a straight line of infinite length in the plane.
Origin of half-plane
1890-1895
1890-95
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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10
10
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