Shmoop's (Natural) Resources for Teachers
The saying, "A picture is worth a thousand words," couldn't be truer in the case of geometry. It's probably more like six or seven thousand if we take inflation into account, though.
The Geometry standards describe the skills your students need in order to prove theorems (step aside, Pythagoras), make constructions (no hard hats needed!), and venture across the three dimensions of time and space...but mostly space.