Предмет: Геометрия, автор: goustgas18

Знайти центральный кут правильного 12-кутника
распишите!!! даю много баллов!!!

Ответы

Автор ответа: zmeura1204

Ответ:

30° центральний кут дванадцятикутника

Объяснение:

Повний кут дорівнює 360°.

Тоді центральний кут дорівнює.

360°/12=30°

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What parts of speech do the following words belong to?
Organic, plantation, nature, accumulate, important, conservation, protection, living, population, necessary, natural
3. Use the correct form of the verbs in brackets in Future Indefinite: 1. The taxi (to drive) him to the railway station. 2. I (not to spend) my summer holidays in the country. 3. You (to return) this book tomorrow? 4. We (to call) a taxi for you. 5. They (not to meet) with their partners next Saturday. 6. He (to arrive) at 8 p.m.? 7. She (to park) the car near their hotel. 8. The traffic (to be) heavy during the holiday. 9. She (to buy) a new car next month? 10. They (to take) their exams in a week? 11. It (to take) me half an hour to prepare breakfast. 12. We (not to go) to Italy next month. 13. She(to write) a letter to her parents tomorrow?
4. . Say what you will do:
1. When I have my own car I’ll …. 2. When I arrive in Kyiv I’ll …. 3. As soon as I get to London I’ll…. 4. If the weather is fine we’ll …. 5. If I know English well I’ll …. 6. When I marry you I’ll ….. 7. If I go to Japan I’ll … . 8. If I am free I’ll …. 9. If I work hard I’ll …. 10. When I finish school I’ll …. 11. If I have enough money I’ll …. 12. When I receive his letter I’ll ….
5. Ask the questions to the underlined words:
1. They will harvest wheat in June. (3)
2. He will carry out his experiments at this research station next year. (2) 26
3. She will go abroad next month. (2)
4. I will buy a ticket for the train tomorrow. (2)
5. He will stay here for a week or two. (2)
6. I shall call you in the evening. (2)
7. They will get all the necessary information from this book. (2)
8. She will prepare a report for the conference in a week. (2)
9. They will have their practical training in Scotland. (2)
10. They will plant trees around the house next autumn. (3)
6. Use Present and Future Indefinite in the following sentences:
1. If the day (to be) warm we (to go) to the beach.
2. I (to call) you up as soon as I (to buy) tickets
. 3. When I (to get) money I (to buy) a flat.
4. If you (to look) through today’s newspaper you (to see) your article published. 5. If you (to return) home at 5 o’clock we (to watch) an interesting football match on TV
. 6. If he (to have) time he (to help) us with our translation.
7. We (to walk) if there (to be) no tram.
8. I (to wait) until he (to come) back.
9. If you (to cross) the road you (to see) the Museum of Nature.
10. You (to catch) the train if you (to hurry). 11. If the weather (to be) favourable the farmers (to get) high yields of cereals.
7. Complete the sentences with the verb to be in Present, Past or Future Indefinite: Ronald Frank ... a managing director of the First Bank of Kingsville in Main Street. He ... always on a business trip. Yesterday he ... in Geneva. Tomorrow he ... in London. Last week he ... in Chicago. Next week he ... in New Orleans. At the moment he ... in Amsterdam. In two hours he ... in the Hague. Three days ago he ... in Paris. At the end of his trip he ... usually very tired but happy. He ... with his family now. His sons ... so much excited. They have got new toys from their father. Everybody in the family ... very glad to see him at home again
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2. When my friend (to come) to St. Petersburg, we shall go to the Russian Museum.
3. His sister (to learn) English at the university. She (to have) her English lessons every day.
4. My mother always (to take) a bus to get to her office but yesterday she (not to take) a bus, she (to walk) there
. 5. We (to like) to go to the seaside. We (to enjoy) swimming in the sea last weekend.
6. Tom always (to have) breakfast. Yesterday he (not to have) breakfast because he (to get) up late.
7. I (to go) to bed at 10 p.m. every day. I (not to go) to bed at 10 p.m. yesterday.
8. Yesterday my father (not to read) a newspaper because he (to be) very busy. He (to read) a newspaper tomorrow. 28
9. He (to turn) on the TV set to watch sports program every morning. Yesterday he (not to turn) on the TV set to watch it, he (to watch) this sports program tomorrow. 10. Who (to take) care of the child in the future? – My grandmother (to do) it.
11. I (to be) ill yesterday and I (to eat) no ice-cream. 12. When the dinner (to be) ready? – It (to be) ready in an hour.
9. Answer the questions to the text “Plants and Nature”.
1. Why won`t animals and man live without plants?
2. Why are plants special living things?
3. What do plants give off into the air?
4. What do man and animals breathe out?
5. When do minerals come back to the soil?
6. What is plant function in conservation and protection of nature?
7. When will population of cities have enough oxygen to breathe?
8. Do you plant trees? If not, when will you plant them?

Знайти центральный кут правильного 12-кутникараспишите!!! даю много баллов!!! ​

Ответы

Знайти центральный кут правильного 12-кутника
распишите!!! даю много баллов!!!