AoPS Book: Art of Problem Solving AoPS Introduction to Geometry Solutions Manual Book: The solutions manual contains full solutions to all of the problems in Introduction to Geometry, not just answers. Middle school students preparing for MATHCOUNTS, high school students preparing for the AMC, and other students seeking to master the fundamentals of geometry will find this book an instrumental part of their mathematics libraries. Solutions: 226 pages. Paperback. 10 7/8 x 8.