Curvilinear: Easy Learning Plane Analytic Geometry. An Intuitively-Easy-To-Use visual interactive software oriented to overcome the abstraction that exists in the Plane Analytic Geometry (PAG) this is a tool that makes it easy to learn and master the PAG the user is allowed to literally see the mathematics while carrying out operations and problems by hundreds in a very short time with the help of the mouse. One thing is to study and try to solve problems on Plane Analytic Geometry with a book (and if you can afford it with a private teacher) definitively the number of solved problems is limited and the grasping of the subject is not always total. Using Curvilinear as a tool to learn PAG while solving problems is not only effective it is also amusing and rewarding Curvilinear is a tool with which hundreds of problems can be solved very quickly once and again until the subject is understood. Hundreds of variations of a given problem can be made with very few mouse clickings. Curvilinear processes the (xy) coordinates entered by the user by either of two methods: mouse or keyboard.When entering data under the Keyboard option the selection of objects (point line circle etc) is made with a mouse click on the object icon then a small window shows up where the user enters the (xy) coordinates via keyboard. This data input mode is oriented to the solution of specific problems.The data input under the Mouse option is very quick provided there is no need of accurate data input otherwise it is very slow because it requires a very high steadiness of the hand (a firm pulse) to control mouse motion. The Mouse input mode is ideal while learning PAG when a great deal of practice is needed and the student needs to become acquainted with the Mathematics and meaning of the PAG.