\documentclass{article}[pstricks,border=8pt,12pt]
\usepackage[utf8]{inputenc} \usepackage{geometry} [a4paper,lmargin=1.5cm,rmargin=1.5cm,Botton=1.5cm,top=1.75cm] \usepackage{graphicx} \usepackage{wrapfig} \usepackage{color} \usepackage{amsmath} \usepackage[T1]{fontenc} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{mathrsfs} \usepackage{cancel} \usepackage[all]{xy} \usepackage{pstricks}
\usepackage{pst-pdf}
\usepackage{pst-solides3d}
\usepackage{pst-all}