Algebraic geometry is a hard subject to learn, and here is as good a place as any. It has a very different flavor from any other kind of geometry we study in this day and age: lots of results about ...

The latter three volumes form the 'Topics' section of Spivak's masterwork; he treats a succession of more advanced theories within differential geometry, with his customary flair and the occasional ...

For example, you should label any angles calculated. A problem solving framework can be used to tackle geometry problems.