Math
posted by Ella Mae .
A student asks what exactly Euclidean geometry is. How
do you answer?

Since this is not my area of expertise, I searched Google under the key words "Euclidean geometry" to get this:
http://www.google.com/search?client=safari&rls=en&q=Euclidean+geometry&ie=UTF8&oe=UTF8
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/. 
he had a huge one