Euclid Euclid is a short geometry primer that includes five of the most basic and well known topics of plane geometry:Lines and Angles, Parallel Lines, Triangles, the Pythagorean Theorem, and Rectangles. The topics are presented in simple, clear, visual, informal terms; no attempt is made to be "mathematically rigorous." The emphasis is on practical use, enjoyment, and beauty. Each topic presents simple theorems, diagrams and examples, and a self quiz. A final exam is offered at the end of "the course". Features: Five Basic Plane Geometry Topics Clear Plain Explanations Colorful Diagrams No Higher Math Needed Practical Applications Presented Self-quizzes With Answers Common Sense Proofs Final Exam Graded A primer that will change your mind about geometry ==> Euclid.