Angles
Classifying Angles - tutorial
http://studyjams.scholastic.com/studyjams/jams/math/geometry/classify-angles.htm
How to Measure Angles with a Protractor
http://studyjams.scholastic.com/studyjams/jams/math/geometry/measure-angles.htm
Game: Alien Angles
http://www.mathplayground.com/alienangles.html
Quadrilaterals
Classifying Quadrilaterals – tutorial
http://studyjams.scholastic.com/studyjams/jams/math/geometry/classify-quadrilaterals.htm
Quadrilateral Properties (from Khan Academy)
https://www.khanacademy.org/math/geometry/quadrilaterals-and-polygons/v/quadrilateral-properties
3D Solids
Solid figures
http://studyjams.scholastic.com/studyjams/jams/math/geometry/solid-figures.htm
Cube Nets
http://illuminations.nctm.org/Activity.aspx?id=3544
Similar / Congruent
Congruent Figures
http://studyjams.scholastic.com/studyjams/jams/math/geometry/congruent-figures.htm
Similar Figures -tutorial
http://studyjams.scholastic.com/studyjams/jams/math/geometry/similar-figures.htm