...Also, you aren't necessarily just looking for 'x'. You could be looking for 'x + y' without knowing, or needing to know, the value of each. This is one area where the SAT likes to do more of than the ACT. (read more)
...I have taught both regular and advanced Geometry for over 10 years. Regular geometry tends to focus on just memorizing theorems and applying them, so I use examples to teach it. Advanced geometry, however, is a student's first introduction to proofs. (read more)