I sincerely hope that I am able to finish all the chapters for CAT 2007 aspirants before August. Perhaps next year, in 2008, my task will become easier. The CAT 2008 aspirants will certainly find everything on totalgadha.com that they want to study online. But for now, I need to grovel, burn the midnight oil and compose one chapter after another for CAT 2007 students to strengthen their fundamentals. As promised in my last article, the current article deals with a frequently occurring topic in geometry in CAT- similarity of triangles. Most of you will notice that this topic is coming year after year in CAT and, as geometry questions in CAT are easy compared with other topics, mastering the concept is easier than mastering concepts in Algebra, Permutation and Combination, or Probability.