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nnaomii
07.10.2019 •
Mathematics
Учотирикутнику авсd, bd-діагональ знайдіть bd, якщо ab=bc=10 см, cd=9см, ad=21 см, навколо чотирикутника авсd можна описати коло. помогите, пожалуйста
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Ответ:
yeha
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