Ps2: recursive graphics (pythagoras tree) in this assignment you will write a program that plots a pythagoras tree as illustrated below. the pythagoras tree is named after the greek mathematician pythagoras because each triple of touching squares encloses a right triangle, in a configuration traditionally used to depict the pythagorean theorem. it is a plane fractal constructed from squares invented by the dutch mathematics teacher albert e. bosman in 1942. in 1957 bosman published a book on het wondere onderzoekingsveld der vlakke meetkunde ("the wondrous exploration field of plane geometry") that contained a description of the pythagorean tree. if the largest square has a size of l × l, the entire pythagoras tree fits snugly inside a box of size 6l × 4l. your task is to write a program ptree. cpp with a recursive function and a main() program that calls the recursive function. your program shall take two command-line arguments l and n: l size of the base square (double) n the depth of the recursion