SADI Muslihuddin Abumuhammad Abdulloh ibni Mushrifuddin (1203/8, Sheroz—1292, hamon jo), shoir, nasrnavis va mutafakkiri fors-tojik. …
Mufassal »TETRAEDR
TETRAEDR (yunoni tetraedron, az yunoni Tetrarop va hedra — asos, ruya), yake az 5 namudi bisyorruyai muntazamro guyand (rasm), ki 4 ruya (sekunjavi), 6 tega, 4 qulla (dar har yak qulla 3 tega ba ham merasand) dorad. Agar a — darozii tegai Tetraedr boshad hajmi on az rui formulai V …
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