графічні примітиви

https://pedagogy.lnu.edu.ua/wp-content/uploads/2018/09/%D0%93%D1%80%D0%B0%D1%84%D1%96%D1%87%D0%BD%D1%96-%D0%BF%D0%B5%D1%80%D0%B5%D1%82%D0%B2%D0%BE%D1%80%D0%B5%D0%BD%D0%BD%D1%8F-%D0%B4%D0%B0%D0%BD%D0%B8%D1%85.pdf