quad·ran·gle 
(kwŏdrăng′gəl)
(kwŏdrăng′gəl)n.
1. Mathematics A quadrilateral.
2.
a. A rectangular area surrounded on all four sides by buildings.
b. The buildings bordering this area.
3. The area of land shown on one atlas sheet charted by the US Geological Survey.
[Middle English, from Old French, from Late Latin quadrangulum, from Latin, neuter of quadrangulus, four-cornered : quadri-, quadri- + angulus, angle.]
quad·rangu·lar (-rănggyə-lər) adj.
quad·rangu·lar·ly adv.