Вопрос школьника по предмету Геометрия
объясните как через данную точку окружности провести касательную к этой окружности
Ответ учителя по предмету Геометрия
Из центра окружности провести перпендекуляр (радиус) к прямой которая имеет сокружностью одну общую точку. По сути касательна это прямая которая имеет с окржностью одну общую точку и перпендекулярна радиусу.
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1)various kinds of sports (to be) popular in Russia.2) Both children and grown-ups (to be) ford of sports .3)What (to be) the matter with her?She (to be) so excited .- I (not to know).4)Where you (to go) ?- I(to go) to the stadium to see the match which (to take) place there today .5)You (to know) that a very interesting match (to take) place last sunday?6) He (to go) to the south a week ago.7)When I(to be)about fifteen years old ,I (to enjoy) playing football.8)our football team (to win) many games last year.9)Where Boris (to be)?-He (to play) chess with his friend.10)I (to be)sorry i (to miss) the match yesterday.But I(to know)the score .It (to be) 4 to 2 in favour of the Russian team.I (to be) absolutely happy.11) I (to think) Nellie (to leave) for Moscow tomorrow.12) I (to be) in a hurry . My friends (to wait) for me .13) You (to be)at the theatre yesterday .You (to like)the opera?- Oh yes ,i(to enjoy) it greatly .14)we (to expect) you (to go) to london next summer. 15)Her english (not to be) excellent ,but she (to work) on it .16) A week ago they (not to know) what to think.17) she (to worry)a lot at the moment but the problems (not to be)very great .18)Last tuesday he (to be)upset and (to have) no idea where to go .19)Could you tell me the way to trafalgar square? I (to go)the right way.
В окружность вписан равносторонний треугольник ABCABC. На дуге ACAC взята произвольная точка MM. Длины отрезков MAMA и MBMB соответственно равны 22 и 10. Найдите длину MCMC.