ABCD is square,force represent in direction of magnitude by AB,2BC,2CD,DA and DB are acting at a point. Show that they are in in equilibrium

H=AB 2BC 2CD DA DB  pojg15n88n09589098y9t8y9n348n0914y42y7b55bvy75tkt3iuthuyhryhurhy7fgufbuhg3fg2g73fg7h3f83r8hbugf33f8hbu3fbrub3fu3gihg4bu3fh8g4ihg4bih3fbugbu3bgug4g8ihbguegbufbufguvrbuvrbybuevbuvrbuevbuenbuevbuvrbuvrbuebuvrbubuevevbuevhuevbgyuevbuevhu3efh8uef4huef4huefh8ebuedfefhuefhuefrhuefh8ifrhufrihrhfrhuhufrhuhrugueriuiuriuer8iureriueriuriuiuer4riuriufruerujfrjudjufjuefihy3freuhreuehueuieehufhuerdfurfrhfrhufeh