| R |  | 
| 1 (Type/Class) | Data.Geometry.Interval.Util | 
| 2 (Data Constructor) | Data.Geometry.Interval.Util | 
| 3 (Data Constructor) | Algorithms.Geometry.WellSeparatedPairDecomposition.Types | 
| 4 (Data Constructor) | Algorithms.Geometry.PolygonTriangulation.TriangulateMonotone | 
| radius | Data.Geometry.Ball | 
| Range |  | 
| 1 (Data Constructor) | Data.Geometry.Interval, Data.Geometry.LineSegment, Data.Geometry | 
| 2 (Type/Class) | Data.Geometry.Interval, Data.Geometry.LineSegment, Data.Geometry | 
| range | Data.Geometry.SegmentTree.Generic, Data.Geometry.SegmentTree | 
| Range' | Data.Geometry.Interval, Data.Geometry.LineSegment, Data.Geometry | 
| rangeOf | Data.Geometry.RangeTree.Generic | 
| rangeOf' | Data.Geometry.RangeTree.Generic | 
| RangeTree |  | 
| 1 (Type/Class) | Data.Geometry.RangeTree.Generic | 
| 2 (Data Constructor) | Data.Geometry.RangeTree.Generic | 
| 3 (Data Constructor) | Data.Geometry.RangeTree | 
| 4 (Type/Class) | Data.Geometry.RangeTree | 
| Raw |  | 
| 1 (Type/Class) | Data.Geometry.PlanarSubdivision.Raw, Data.Geometry.PlanarSubdivision.Basic, Data.Geometry.PlanarSubdivision | 
| 2 (Data Constructor) | Data.Geometry.PlanarSubdivision.Raw, Data.Geometry.PlanarSubdivision.Basic, Data.Geometry.PlanarSubdivision | 
| rawCameraNormal | Graphics.Camera | 
| rawDartData |  | 
| 1 (Function) | Data.PlaneGraph.Core, Data.PlaneGraph | 
| 2 (Function) | Data.Geometry.PlanarSubdivision.Basic, Data.Geometry.PlanarSubdivision | 
| RawFace |  | 
| 1 (Type/Class) | Data.Geometry.PlanarSubdivision.Raw | 
| 2 (Data Constructor) | Data.Geometry.PlanarSubdivision.Raw | 
| rawFaceBoundary |  | 
| 1 (Function) | Data.PlaneGraph.Core, Data.PlaneGraph | 
| 2 (Function) | Data.Geometry.PlanarSubdivision.Basic, Data.Geometry.PlanarSubdivision | 
| rawFaceData | Data.Geometry.PlanarSubdivision.Basic, Data.Geometry.PlanarSubdivision | 
| rawFacePolygon |  | 
| 1 (Function) | Data.PlaneGraph.Core, Data.PlaneGraph | 
| 2 (Function) | Data.Geometry.PlanarSubdivision.Basic, Data.Geometry.PlanarSubdivision | 
| rawFacePolygons |  | 
| 1 (Function) | Data.PlaneGraph.Core, Data.PlaneGraph | 
| 2 (Function) | Data.Geometry.PlanarSubdivision.Basic, Data.Geometry.PlanarSubdivision | 
| rawVertexData | Data.Geometry.PlanarSubdivision.Basic, Data.Geometry.PlanarSubdivision | 
| rawViewUp | Graphics.Camera | 
| readPlaneGraph | Data.PlaneGraph.IO, Data.PlaneGraph | 
| readVec | Data.Geometry.Vector.VectorFamily, Data.Geometry.Vector, Data.Geometry | 
| Rectangle | Data.Geometry.Box.Internal, Data.Geometry.Box | 
| Regular | Algorithms.Geometry.PolygonTriangulation.MakeMonotone | 
| reIndexPoints | Algorithms.Geometry.WellSeparatedPairDecomposition.WSPD | 
| relationTo | Data.Geometry.QuadTree.Cell | 
| renderLineSegment | Graphics.Render | 
| renderPoint | Graphics.Render | 
| renderTriangle | Graphics.Render | 
| renderWithTransform | Graphics.Render | 
| replicate | Data.Geometry.Vector, Data.Geometry | 
| Report |  | 
| 1 (Type/Class) | Data.Geometry.RangeTree.Measure | 
| 2 (Data Constructor) | Data.Geometry.RangeTree.Measure | 
| report | Data.Geometry.RangeTree.Generic | 
| reportList | Data.Geometry.RangeTree.Measure | 
| reportSubTree | Data.Geometry.KDTree | 
| reverseOuterBoundary | Data.Geometry.Polygon, Data.Geometry | 
| rightEndpoint | Algorithms.Geometry.LineSegmentIntersection.BentleyOttmann | 
| rightFace |  | 
| 1 (Function) | Data.PlaneGraph.Core, Data.PlaneGraph | 
| 2 (Function) | Data.Geometry.PlanarSubdivision.Basic, Data.Geometry.PlanarSubdivision | 
| rightOf | Data.Geometry.HalfSpace | 
| rightPart | Algorithms.Geometry.WellSeparatedPairDecomposition.Types | 
| RightSide | Data.Geometry.Line.Internal, Data.Geometry.Line, Data.Geometry | 
| rightSide | Data.Geometry.Box.Sides, Data.Geometry.Box | 
| rightTangent | Data.Geometry.Polygon.Convex | 
| rotateCoordSystem | Graphics.Camera | 
| rotateL | Algorithms.Geometry.DelaunayTriangulation.DivideAndConquer | 
| rotateL' | Algorithms.Geometry.DelaunayTriangulation.DivideAndConquer | 
| rotateR | Algorithms.Geometry.DelaunayTriangulation.DivideAndConquer | 
| rotateR' | Algorithms.Geometry.DelaunayTriangulation.DivideAndConquer | 
| rotateTo |  | 
| 1 (Function) | Data.Geometry.Transformation, Data.Geometry | 
| 2 (Function) | Algorithms.Geometry.DelaunayTriangulation.DivideAndConquer | 
| rotateToFirst | Algorithms.Geometry.DelaunayTriangulation.DivideAndConquer | 
| RST | Algorithms.Geometry.WellSeparatedPairDecomposition.WSPD | 
| RT | Data.Geometry.RangeTree | 
| RTMeasure | Data.Geometry.RangeTree |