/usr/include/dolfin/geometry/ is in libdolfin-dev 2016.2.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/dolfin/geometry/BoundingBoxTree.h
/usr/include/dolfin/geometry/BoundingBoxTree1D.h
/usr/include/dolfin/geometry/BoundingBoxTree2D.h
/usr/include/dolfin/geometry/BoundingBoxTree3D.h
/usr/include/dolfin/geometry/CollisionDetection.h
/usr/include/dolfin/geometry/GenericBoundingBoxTree.h
/usr/include/dolfin/geometry/IntersectionTriangulation.h
/usr/include/dolfin/geometry/MeshPointIntersection.h
/usr/include/dolfin/geometry/Point.h
/usr/include/dolfin/geometry/SimplexQuadrature.h
/usr/include/dolfin/geometry/dolfin_geometry.h
/usr/include/dolfin/geometry/intersect.h