Предмет: Математика, автор: senchenko453

СРОЧНО!!! Дві площини паралельні між собою. Із точки М, що не належить жодній з
площин, не лежить між ними, проведено дві прямі, які перетинають ці площини
відповідно в точках А 1 і А 2 , В 1 і В 2 . Відомо, що МА 1 =4 см, В 1 В 2 =9 см, А 1 А 2 =МВ 1 .
Знайдіть МА 2 і МВ 2 .

Ответы

Автор ответа: viktoriya602602
1

Відповідь:

Покрокове пояснення: Відрізки А1В1 і А2В2 паралельні, бо лежать в паралельних площинах. Отже маємо для трикутників МА1В1  і МА2В2 третю ознаку подібності.

Нехай МВ1 = х, тоді А1А2=х. Із подібності трикутників можна скласти відношення (4+х)/4=(9+х)/х =>x=6 . Тоді МА2=10см, МВ2=15см.

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