Jardim de números

Synopsis: Katia need to build a garden for a client that has the form of the Brazilian flag. To this she enlists the help of Liliane, which explains why the problem of the construction of the garden can be solved by analytic geometry, making the identification of the garden with a Cartesian plane.
Source: Unicamp - M3, Mathematics Multimedia.
URL: http://m3.ime.unicamp.br/recursos/1121