| unAssoc | Data.Geometry.RangeTree | 
| UnBounded | Algorithms.Geometry.LinearProgramming.Types | 
| unboundedIntersections | Data.Geometry.Arrangement.Internal, Data.Geometry.Arrangement | 
| unBoundedParts | Data.Geometry.Arrangement.Internal | 
| unCI | Data.Geometry.PlanarSubdivision.Raw | 
| unCoord | Data.Geometry.KDTree | 
| unEndPoint | Data.Geometry.Interval, Data.Geometry.LineSegment, Data.Geometry | 
| uniformScaling | Data.Geometry.Transformation, Data.Geometry | 
| unIntervalTree | Data.Geometry.IntervalTree | 
| unit | Data.Geometry.Vector, Data.Geometry | 
| unitBall | Data.Geometry.Ball | 
| unitEllipse | Data.Geometry.Ellipse | 
| unKDT | Data.Geometry.KDTree | 
| unL | Data.Geometry.Interval.Util | 
| unLevel | Algorithms.Geometry.WellSeparatedPairDecomposition.Types | 
| unR | Data.Geometry.Interval.Util | 
| unsafeCoord | Data.Geometry.Point, Data.Geometry | 
| unSegmentTree | Data.Geometry.SegmentTree.Generic, Data.Geometry.SegmentTree | 
| unSlab | Data.Geometry.Slab | 
| unV |  | 
| 1 (Function) | Data.Geometry.Vector.VectorFixed | 
| 2 (Function) | Data.Geometry.Vector.VectorFamily, Data.Geometry.Vector, Data.Geometry | 
| unVF | Data.Geometry.Vector.VectorFamilyPeano | 
| upper | Data.Geometry.Interval, Data.Geometry.LineSegment, Data.Geometry | 
| upperHalfSpaceOf | Algorithms.Geometry.ConvexHull.Naive | 
| upperHull |  | 
| 1 (Function) | Algorithms.Geometry.ConvexHull.GrahamScan | 
| 2 (Function) | Algorithms.Geometry.ConvexHull.DivideAndConquer | 
| 3 (Function) | Algorithms.Geometry.ConvexHull.JarvisMarch | 
| upperHull' |  | 
| 1 (Function) | Algorithms.Geometry.ConvexHull.GrahamScan | 
| 2 (Function) | Algorithms.Geometry.ConvexHull.JarvisMarch | 
| UpperHullAlgorithm | Algorithms.Geometry.LowerEnvelope.DualCH | 
| upperHullFromSorted | Algorithms.Geometry.ConvexHull.GrahamScan | 
| upperHullFromSorted' | Algorithms.Geometry.ConvexHull.GrahamScan | 
| upperTangent | Data.Geometry.Polygon.Convex | 
| upperTangent' | Data.Geometry.Polygon.Convex |