Урок первый: тиснение
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![[TutorOnline - уроки для школьников] Правильные многоугольники. Геометрия 9 класс | Математика | TutorOnline](https://sun9-60.userapi.com/impg/zxd9gZjW8U26eXixh0vDusBHKncS1FhD6mFFbg/aLZ4iRxs39M.jpg?size=320x240&quality=95&keep_aspect_ratio=1&background=000000&sign=b21b2b5dd0deb06e4ae9a824d15bebba&c_uniq_tag=Rla9x5UALBx-1v2pL5177AVWEhjzWgVauexYIyeG9vA&type=video_thumb)
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