figuras geómetricas

     Pentágono             

http://www.google.com/imgres?um=1&hl=en&sa=X&biw=1440&bih=755&tbm=isch&tbnid=hKLvB-0Dt-kwTM:&imgrefurl=http://www.cs.technion.ac.il/~gershon/EscherForReal/&docid=U-HGoqtoBKY7jM&imgurl=http://www.cs.technion.ac.il/~gershon/EscherForReal/Penrose5.gif&w=684&h=673&ei=gma1T_DJCIrq9AS9-NUK&zoom=1&iact=hc&vpx=778&vpy=270&dur=256&hovh=223&hovw=226&tx=116&ty=153&sig=106167658554129753753&page=1&tbnh=138&tbnw=139&start=0&ndsp=29&ved=1t:429,r:11,s:0,i:96