Deciphering the Proof is for students, parents, and new teachers who need practice solving proofs in Geometry. Specifically, where Geometry is part of the 4e curriculum in a French program, or for American students taking Geometry between Grades 8 and 10. The book shows, step-by-step, how to reason and solve Geometry problems, by writing solutions in a clear, logical, and deductive sequence. This strategy is called, "modeling." Students learn, by imitating the method, and eliminating all the non-value adding verbiage that distract graders. By showing the core steps required to solve a problem, students avoid extraneous text, and steps, which make the solution difficult to follow, and difficult for the grader to evaluate with precision. Teachers can use the material, in class, by showing partial solutions (of the reasoning or the proof), and asking the students to complete the other part. The book should be used as a complement to a Geometry textbook. It is especially beneficial for average students with difficulties writing the solution to a problem in a logical deductive process. It is recommended to the user of the book to, first, try to solve the problems entirely, before comparing with the step-by-step solutions following each chapter.