из вершины развёрнутого угла абц проведите луч луч бд, так чтобы градусная мера угла абд была была в 5раз меньше градусной меры угла цбд.чему равны градусные меры углов абц и цбд?
sifrel98
1
02.05.2021 15:50
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Пошаговое объяснение:
Развёрнутый угол = 180°
угол АБД = х°
угол ЦБД = 5х°
х + 5х = 180
6х = 180
х = 180 : 6
х = 30
АБД (х) = 30°
ЦБД (5х) = 5 * 30 = 150°
30° + 150° = 180°