Предмет: Геометрия, автор: nnyynynyynnuy

В каком случае точки C, D и E не лежат на одной прямой если:

CD=10см. CD=17см. CD=5см. CD=16см

CE=4см. CE=14см. CE=7см. CE=8см

DE=6см. DE=6см. DE=12см. DE=8см


Геометрия 7 класс

Ответы

Автор ответа: borovkovavika07
1

Ответ:

Не лежат во втором и третьем случае

Объяснение:

На примере первого покажу

С_____________________Д 10(см)

С______Е(4см)__________Д (6 см)

Отсюда следует ,что СЕ+ДЕ= 10 см, что и отрезок СД

Нужно просто складывать,если совпадет с длиной всего отрезка,то точки лежат на одной прямой

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3. Read the poem and pick …… all the adjectives.

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2. ….. from different countries will take part in the concert. ( MUSIC)

3. The ….. advised me to read this book. ( LIBRARY)

4. A good teacher motivates pupils to think …… . ( DEPEND)


VI. Put the verbs into the correct future form: Future Simple, Future Perfect, Future Continuous, Future Perfect Continuous, Present Simple, Present Continuous, to be going to.

1. I ( to wait) here until Jane comes.

3. By the end of the month, he ( to work) for the company for ten years.

4. In twenty -four hours I (to relax) on my yacht.

5. Next week her granny ( to be) 90 years old.

7. I hope one day I ( to return) to my native town.

8. They ( to finish) their project by June.

9. The match ( to start) at 7 p.m.

10. They ‘ (to move) house as soon as they buy new furniture.


VII. Put the adjectives into the correct form.

2. Children these days seem to become ( rude) and ( rude).

3. Which of these houses is (expensive)?

4. He had to admit that Mary was much ( slim) than his wife.

5. To get promotion you must work ( hard) and be (responsible).

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8. John is by far (sociable) person in his school.

9. (Much) you stay at home, ( bad) you ‘ll feel in the street.