Предмет: Геометрия, автор: LiliyaKysil

Дано точки А,В і С такі, що АВ= 2 см, ВС=5 см, АС= 3 см. Скільки існує площин, які містять точки А,В,С? Відповідь обгрунтуйте.

Ответы

Автор ответа: Anastsiia

Безліч.
$AB+AC=BC \ 2+3=5$
Ці три точки лежать на одній прямій, А між В і С.
Площину, і до того ж одну, можна провести лише через 3 точки, які не лежать на одній прямій.
Тут лежать, тому безліч.

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Физика, автор: antistresszalipaski

Начертите принципиальную схему электрической цепи, изображённой на рисунке

6 лет назад

Предмет: Английский язык, автор: sergeyok3589

Выберите правильный вариант ответа
1. They came in and __________ me a cup of coffee. *

had offered

have offered

offered

has offered

2. My friend offered me some help because I _____ him about it. *

had asked

have asked

asked

has asked

3. Max had trained a lot before he ______ the competition. *

had won

have won

won

has won

4. Son felt sad because mother _______ to him everything. *

hadn't explained

hadn't explain

didn't explained

didn't explain

5. I came to the party first as I ______ it. *

had organized

have organized

organized

has organized

6. The teacher asked: "Do you learn the poem by heart.

7. Lulu said to Bob: "I visited the theatre last week." *

8. Mother said:"I'm cooking the dinner now."

9. Len said:" I have never been to the theatre."

10. Dan asked:"Have you ever been to the theatre?"

11. Sara told us she had been to the theatre _________. *

yesterday

the day before yesterday

the day before

12. I explained that I had sent the letter _________. *

last week

the previous week

next week

13. I was playing the guitar at 4 o'clock ______. *

yesterday

the day before

next day

14. He saw me 5 days ________ *

yesterday

ago

before

15. Max said he lived in _____ flat ___________ *

that, the previous year

this, last year

here, last year

6 лет назад

Предмет: Английский язык, автор: prosin421

Задайте вопросительное придложение we have played the violin since childhood

6 лет назад

Предмет: Алгебра, автор: sve86893762

В равнобедреннои треугольнике АВС с основанием ав угол С равен 28. Нийдите угол между сторонами ав и высотой ан этого треугольника

10 лет назад

Предмет: История, автор: typayagirls

особенности промышленной революции в США

10 лет назад