Приложение на две нови формули за лице на четириъгълник / Application of two new formulae for the area of a quadrilateral
| Autor: | Stefanov, Stanislav, Alashka, Rayna, Tsvetanov, Sevdalin, Haimov, Haim |
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| Zdroj: | Математика плюс / Mathematics Plus. 31(1):74-87 |
| Databáze: | Central and Eastern European Online Library (CEEOL) |
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