how to set 2 cm margin in each side of my document

Question

Please I want to set 2 cm margin in each side of my pages(top,down,left,right) I have seen many many margin but I don't know how can I set the exact magins to have at the end 2 cm I did

\setlength{\hoffset}{-0.57cm}
\setlength{\voffset}{-1.25cm}
\setlength{\evensidemargin}{0cm} 
\setlength{\oddsidemargin}{0mm} % 15 mm par def. 
\setlength{\topmargin}{1mm}
\setlength{\headheight}{0cm} % 1 cm par d�faut
\setlength{\headsep}{1.00cm}
\setlength{\textheight}{22cm}
\setlength{\textwidth}{17cm} % 16 cm par d�f.
\setlength{\marginparsep}{0cm} % 1mm par def.
\setlength{\marginparwidth}{0cm}
\setlength{\headheight}{2\baselineskip} 
\setlength{\footskip}{2.5cm}

when I set \usepackage[margin=2cm]{geometry} I get the ooutput in this picture

thanks in advance

Answer 1

Simply use: \usepackage[margin=2cm]{geometry} in your preamble. The geometry package will calculate all other parameters for you. You should never modify \hoffset and \voffset without serious reasons.