baktybaevalbina
07.06.2020 12:12

Математика
выполните самостоятельную работу
1. Закончите предложение
а) прямая называется перпендикулярной плоскости,
если она
б) если две прямые перпендикулярны плоскости, то
А
в) две плоскости называются перпендикулярными,
если
2. Запишите признак перпендикулярности прямой и плоскости
3. Запишите теорему о трёх перпендикулярах.
4. Запишите признак перпендикулярности двух
Плоскостей.
5. Дан треугольник ABC. Плоскость, параллельная
прямой AB, пересекает сторону AC в точке К, а
сторону ВС в точке М. Докажите, что прямая КМ
параллельная прямой AB. Найдите длину отрезка АВ,
если КС = 12 м, АС = 24 м, КМ = 9 м.
6. Точка 0 - центр квадрата со стороной 8 см. ОМ -
перпендикуляр к плоскости квадрата длиной 3 см.
Найдите расстояние от точки M до стороны квадрата.
7. В прямоугольном параллелепипеде длины трёх рёбер, выходящих из одной вершины, равны 4 дм, 6дм и 12 дм. Найдите длины диагоналей
параллелепипеда.
8. В прямоугольном параллелепипеде
ABCDA,B,C,D, известно, что BD - √77,
BB1 = 5, A1D1 = 6. Найдите длину ребра АВ.​

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Популярные вопросы:
Ответ:
EHOT229
24.11.2022 05:32
If you are planning to go to Japan on holiday, you should
1 yourself to one or two nights at a Buddhist
temple. Staying in these temples gives you the chance to visit both historic and remote areas of Japan. They
don’t
2 to foreign visitors, who can experience the life of a Buddhist monk in a unique way.
Zen Buddhism 3 in Japan since 1191, when it
4 from China. However, interest in Zen Buddhism
5 in Japan for the last 60 years, while it
6 more popular in the West. As a result, many people come
to Japan so
7 they can learn more about it. Staying at a temple is a unique and inspiring experience and is
sure to be one of the highlights of any
8 to Japan.
In the past, in
9 to join a Japanese temple you had to sit at the front gate for three days without sleeping.
Now, all you need to do is make a phone call or write an e-mail! You will often have the chance to join
meditation sessions both in the evening and the morning. For dinner you will be served a Buddhist meal,
which is healthy and delicious, if you don’t
10 having no meat, no fish, no spices, no onions and no garlic!
1 A book B give C show D treat
2 A object B play C study D turn
3 A existed B has existed C was existing D has been existing
4 A arrived B has arrived C was arriving D has been arriving
5 A declines B declined C was declining D has been declining
6 A gets B got C was getting D has been getting
7 A for B order C that D to
8 A event B stay C trip D tourist
9 A for B order C so D that
10 A reserve B recommend C matter D mind
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Ответ:
Маруся203
05.03.2022 03:40

anna akhmatova - was the pen name of anna andreevna gorenko, the leader and the heart and soul of st petersburg tradition of russian poetry in the course of half a century.

akhmatova's work ranges from short lyric poems to universalized, ingeniously structured cycles, such as requiem (1935-40), her tragic masterpiece on the stalinist terror. her work addresses a variety of themes including time and memory, the fate of creative women, and the difficulties of living and writing in the shadow of stalinism.

early life

akhmatova was born in bolshoy fontan near odessa. her childhood does not appear to have been happy; her parents separated in 1905. she was educated in kiev, tsarskoe selo, and the smolny institute of st petersburg. anna started writing poetry at the age of 11, inspired by her favourite poets: racine, pushkin, and baratynsky. as her father did not want to see any verses printed under his "respectable" name, she had to adopt the surname of one of her tatar ancestors as a pseudonym.

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