Предмет: Геометрия, автор: solovyov317

Всі сторони паралелограма рівні?

Ответы

Автор ответа: marinashev0104

0

Ответ:

- В параллелограмме противоположные стороны равны и противоположные углы равны. - Диагонали параллелограмма точкой пересечения делятся пополам. - Сумма квадратов диагоналей параллелограмма равна удвоенной сумме квадратов его двух смежных сторон: пусть а — длина стороны AB, b — длина стороны BC, и — длины диагоналей; тогда

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: upanchkovskaa

ПОМОГИТЕ ПРОШУ!даю 50 баллов

Choose the right variant.
1. At 7 o’clock yesterday I (to go) to the theatre.
2. We (to play) in the yard the whole day yesterday.
3. I (to see) this film this week. I like it very much.
4. We (not to see) each other for ages.
5. When the children (to have) dinner, they (to go) for a walk.
6. Look! Jane (to swim) across the river.
7. The man (to get) off the bus without paying while the conductor (to collect) fares upstairs.
8. I (to lose) my key when I (to play) in the yard yesterday.
9. Look! The rain (to stop) and the sun (to shine)
10. When the ship (to cross) the ocean, a great storm (to break) out.
11. Ring me up as soon as you (to come) home.
12. Yesterday they (to do) all their homework before mother (to come) home.
13. Tom (to do) his homework by 7 o’clock yesterday.
14. She is happy: her son (to finish) school.
15. Tom (to train) at the stadium from 6 till 8 yesterday.
16. My sister (to buy) a pair of nice shoes this month.
17. My friend just (to recover) after a serious illness.
18. I never (to be) to the Bahamas.
19. She (to do) her flat the whole day on Sunday.
20. They (to reach) the river by sunset.
21. I (not to dance) for ages.
22. At this time yesterday we (to talk) about you.
23. The student (to write) the letter by dinner-time.
24. He (to begin) to write his test at 3 o’clock.
25. He (to be) here 5 minutes ago, but you (to be) out.
26. When we (to come) to the station, the train already (to arrive).
27. He (to tell) me that no one (to come) to meet him at the station.
28. We could not go out because it (to rain) hard since morning.
29. When you (to see) him last?
30. Don’t enter the bedroom. The child ( to sleep) there.
31. The moon (not to rise) yet.
32. Yesterday I (to buy) a new pair of gloves, as I (to lose) the old ones.
33. Go to see your friends as soon as you (to arrive) in Novgorod.
34. The (to sail) down the river for many hours before they (to come) to the village.
35 You (to be) late for the concert if you (not to take) a taxi.
36. The sun (to set) a long time ago, and it (to begin) to get cold.
37. When I (to come) home yesterday, my sister already (to return).
38. She is going to read the letter she just (to receive).
39.The rain (to stop) by the time we (to reach) home.
40. The message (to arrive) 5 minutes after he (to leave) the house.
41. It (to be) 11 o’clock when we (to begin) doing this work.
42. Here you (to be) at last!
43. Tom (to read) by the fireplace now.
44. I (to live) in Minsk since 1991.
45. By the 15th of January the students (to pass) all the exams.
46. I (to go) to the cinema yesterday.
47. He (to do) his homework the whole day yesterday.
48. When I (to meet) Tom, he (to go) to the shop.
49. Nick (to ring) me up two days ago.

5 лет назад

Предмет: Английский язык, автор: alexminaev

13.Read and translate the text. Put the correct article and answer the questions.

Eat right

SONNY ALABA, 19, is a young footballer from Nigeria. He plays for a club in the English Premier League, called Portsmouth. ‘Diet is really important for footballers. Pasta and potatoes are the best kinds of food if you want to play well - they give you energy. I’ve got an important
match this afternoon. The match starts at three so I’m having lunch now, about four hours before the match starts. I always have a bowl of pasta with tomato sauce and then fruit but I can’t eat meat because it’s difficult to digest. Oh, and I drink a lot of water, because during the match, we
lose two or three litres!’

MARINA SCHNEIDER, 19, is ___ professional ballet dancer with ___ Royal Ballet, ___ most famous ballet company in Britain. ‘Usually, ____ ballet dancers only weigh about 45 kg so we are very careful about __ food. Three or four hours before ___ performance, l have__ baked potato or ___ bowl of pasta. Then, just before ___ performance starts, I eat ____orange and ___ bar of chocolate. ___ orange gives me liquid and __ chocolate gives me energy.’

KATSUKO SASAKI, 18, wants to become __ professional sumo wrestler. '___ Sumo
wrestlers need to be fat, so their diet is very unusual. They don't have __ breakfast
before they train in __ morning, so they’re very hungry at ___ lunchtime. They start lunch with five or six bowls of special soup, called chankonabe. Then, they eat __ big
bowl of rice and __ lot of meat – maybe fifteen or twenty pieces! They also drink ___ lot of beer and then they go to sleep in ___ afternoon for about four hours!

What are their jobs? Do you think their diet is important for their work?

Tell what they eat before a match or performance.

5 лет назад

Предмет: Алгебра, автор: nikolajvyskov

Решите неравенство..

5 лет назад

Предмет: Математика, автор: mari207

в магазине32 саженца продали за 4 дня,поровну в каждый день. Сколько саженцев продадут за 5 дней?

8 лет назад

Предмет: История, автор: Nanami210

Кроссворд по теме каменный век. Вопросы и ответы 15-20 вопросов
Помогите

8 лет назад