Concept PolygonOffsetBuilderTraits_2: CGAL::Polygon_offset_builder_traits_2
Concept StraightSkeleton_2: CGAL::Straight_skeleton_2
Concept StraightSkeletonBuilder_2_Visitor: CGAL::Dummy_straight_skeleton_builder_2_visitor
Concept StraightSkeletonBuilderTraits_2: CGAL::Straight_skeleton_builder_traits_2<K>
Concept StraightSkeletonFace_2: CGAL::Straight_skeleton_face_base_2
Concept StraightSkeletonHalfedge_2: CGAL::Straight_skeleton_halfedge_base_2
Concept StraightSkeletonItemsConverter_2: CGAL::Straight_skeleton_items_converter_2
Concept StraightSkeletonVertex_2: CGAL::Straight_skeleton_vertex_base_2