$ sudo apt-get update
$ sudo apt-get install libgeos-c1 

libgeos-c1 is installed in your system.

Make ensure the libgeos-c1 package were installed using the commands given below,

$ sudo dpkg-query -l | grep libgeos-c1 *

You will get with libgeos-c1 package name, version, architecture and description in a table

libgeos-c1 package basic information: