More graphing
http://mathplayground.com/SaveTheZogs/SaveTheZogs.html
Slope
http://crctlessons.com/slope-game.html
http://www.slidermath.com/rpoly/Coord2.shtml
http://www.quia.com/cc/63508.html
Slope Intercept game
http://crctlessons.com/slope-intercept-game.html
http://www.math-play.com/slope-intercept-game.html
http://www.slidermath.com/rpoly/Line2pt.shtml 
Video point-slope
http://www.onlinemathlearning.com/point-slope-form.html
Jeopardy point-slope
http://www.quia.com/cb/79602.html?AP_rand=527725608 
 
Geometry
Area
http://www.math.com/school/subject3/practice/S3U2L4/S3U2L4Pract.html 
http://www.quia.com/mc/379267.html
http://www.edhelper.com/math/area_perimeter5.htm
http://www.mathgoodies.com/lessons/vol1/area_trapezoid.html
(scroll down for practice)
http://www.mathgoodies.com/lessons/vol1/challenge_unit1.html 
videos
http://www.onlinemathlearning.com/area-polygon.html
Polygon vocabulary
http://www.mathplayground.com/matching_shapes.html