libgeos++-dev - 3.9.0-1 main

GEOS provides a spatial object model and fundamental geometric
functions. It implements the geometry model defined in the
OpenGIS Consortium Simple Features Specification for SQL.
.
This package contains the headers and libraries needed to
develop programs using GEOS in C++. Note that third-parties
programs should use the stable C API instead of the
unstable C++ one.