teng tomonli uchburchakning burchaklari necha gradusdan, 60 gradusdan, tugri burchakli teng yonli uchburchakning utkir burchagi necha gradus, 45, teng yonli uchburchakning asosidagi burchagi 30 gradusga teng bulsa,uchidagi burchagi necha gradus, 120

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