Источники

1.https://sun9-70.userapi.com/c854220/v854220656/20d15c/3UVaJhFnY5Y.jpg

2. https://sun9-11.userapi.com/c626616/v626616462/1df9b/8p2xlCDY_rQ.jpg

3. https://yandex.by/images/search?crop=0.006%3B0.0103%3B1%3B1&cbir_id=3369086%2Fk26YztTldK6QAmt6uCq_cw9749&pos=0&rpt=imageview&img_url=https%3A%2F%2Ffs.znanio.ru%2Fd5aff2%2F15%2F37%2Fc06e58c95c5b8c824b05178f050ec736d1.jpg&lr=158&cbir_page=similar&url=https%3A%2F%2Fim0-tub-ru.yandex.net%2Fi%3Fid%3D6bf8bf8578edc392dded32ba686dc980-l%26ref%3Drim%26n%3D13%26w%3D816%26h%3D613

4.https://i.ytimg.com/vi/GJp5usL3Lfs/maxresdefault.jpg

5. https://www.youtube.com/playlist?list=PL0BB8CC626C09CAA3 (видеоуроки по Компас 3D)

6. Шамбер Ю.В. (презентация "Проекции вершин,ребер, граней")