Предмет: Геометрия, автор: jui20158339

Ребят помогайте крайняк через 2 часа нужен ответ плиз четырех уголь ник АВСД вписан в окружность угол авс равен 48 градусов угол сад равен 38 градусов найдите угол аВд

Ответы

Автор ответа: LFP
1
нужно рассмотреть дуги, на которые опираются вписанные углы...
угол АВС опирается на дугу ADC ---она равна 48*2 = 96 градусов
угол СAD опирается на дугу DC ---она равна 38*2 = 76 градусов
угол АВD опирается на дугу AD ---она равна дуга ADC минус дуга DC =
96-76 = 20 градусов
вписанный угол равен половине градусной меры дуги, на которую он опирается)))
угол ABD = 10 градусов
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Beyond Our Dreams!
From my point of view our college is modern and
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