First, is a slideshow I use to introduce polygons. The second is a geometry unit review that includes lines, angles, polygons, 3-D shapes, area, and perimeter. The second freebie comes in two formats -- as a PDF so you don't have to mess with fonts or as a PowerPoint so you can edit until your heart's content.
Click on the pictures above to hop on over to my blog and download these freebies.
Hope you find these useful,