http://sheppardsoftware.com/math.htm#geometry geometry games, 2D and 3D shapes, symmetry, congruence
http://www.technologyrocksseriously.com/2011/01/2d-and-3d-shapes.html2D and 3D shapes, polygones, sides, edges, vertices
http://www.bbc.co.uk/bitesize/ks2/maths/shape_space/angles/play/game about angles, misson game
http://www.oswego.org/ocsd-web/games/BillyBug/bugcoord.htmlcoordinate grids
http://www.aplusmath.com/cgi-bin/games/geopicture hidden picture with geometry terms