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В треугольнике ABC серединный перпендикуляр к стороне AB пересекает сторону АС в точке D. Сделайте рисунок и сравните отрезки AC и CB. Помогите пожалуйста
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Предмет:
Геометрия -
Автор:
alfredonavarro - 6 лет назад
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Ответы 1
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Серединный перпендикуляр в треугольнике является медианой и высотой⇒ ΔABD-равнобедренный, ∠BAC=∠ABD. Сторона СВ лежит против меньшего угла BAC, сторона АС лежит против большего угла ∠АВC=∠ВАС+∠DBC⇒АС больше СВ.
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Автор:
howard20 - 6 лет назад
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Changing the Future.
Young people in many Western cultures want to become independent. They want to live away from their parents. They want to have a job. They want to earn their own money. They want to get married. They want to have children. They want to have a home in a nice community. However, it is hard for young adults in many parts of the world to become independent. One factor is that they cannot find jobs.
WHY JOBS ARE HARD TO FIND. Automation is one reason why jobs are hard to find. Automation means that businesses use machines instead of people to do work. A shoe factory, for example, once needed many workers to cut leather and sew the pieces together. This was hard physical work. Now a machine can do this work. One machine can often do a job that once needed 20 workers to do. As a consequence, businesses have fewer jobs to offer. Another factor is that m any jobs need workers with special training. For some jobs workers must have a university degree. Companies will not hire someone with insufficient training or without a degree. Training may take months. Earning a degree may take several years. Consequently, many young men and women cannot get a good job. They must first finish their training or education. Finally, the world economy has had serious problems in recent years. Businesses in m any countries are not hiring new workers. There are too few jobs and too m any people seeking work. As a consequence, a large number of young adults cannot find jobs. They cannot earn sufficient money to support themselves or a family.
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