Geometry for Fun, in Corona Days, 2020

In order to draw geometrical shapes, for examples, lines, stars, circles, triangles, squares, n-gens, motiff and daisy patterns, spriographs, islamic art patterns, etc., we can use parametric forms of geometric formulae. In this text, I'll present a simple and easy way, that, with this approach, we can get symmetric or non-symmetric, regular or irregular many shapes in many types.