Предмет: Геометрия, автор: sovanadube

Сросно помогите! Даю 70 баллов за все ответы

Приложения:

Ответы

Автор ответа: DDHELPER
1

Ответ:

Знизу

Объяснение:

якщо один із отриманих кутів дорівнює 20°, то інший кут, який утворюється перетином двох прямих, також дорівнює 20°, оскільки прямі, що перетинаються, утворюють зворотню пару кутів, які дорівнюють одне одному.

Нехай один із суміжних кутів буде x градусів. Тоді інший кут буде x + 70°, оскільки він на 70° більший за перший суміжний кут.

Якщо два суміжних кути відносяться як 2:4, то можна сказати, що перший кут дорівнює 2x градусів, а другий - 4x градусів, де x - спільний множник. Сума цих двох кутів повинна дорівнювати 180° (оскільки це сума суміжних кутів на прямій). Отже, маємо рівняння:

2x + 4x = 180°

6x = 180°

x = 180° / 6

x = 30°

Перший кут дорівнює 2x = 2 * 30° = 60°, а другий кут дорівнює 4x = 4 * 30° = 120°.

Якщо сума двох кутів дорівнює 270°, то це означає, що ці два кути утворюють зворотню пару кутів (доповнюють одне одного до 180°). Тобто, якщо один кут дорівнює x градусів, то інший кут дорівнює 180° - x градусів. Отже, можна записати рівняння:

x + (180° - x) = 270°

180° = 270°

Це рівняння не має розв'язку, що означає, що такі два кути не існують.

Якщо промінь перпендикулярний до однієї з прямих і утворює кут 20° з іншою прямою, то ми можемо застосувати властивості вертикальних кутів. Вертикальні кути дорівнюють одне одному. Отже, кут, утворений при перетині променя і другої прямої, також дорівнює 20°.

Похожие вопросы
Предмет: Английский язык, автор: uliaslisarcuk60
5 a) Listen to the children talking about the schools they go to a school and a gymnasium. Complete the table. secondary
A Secondary School Questions
A Gymnasium Location and size Facilities School subjects After-school activities








Speaker 1. My name is Olha Ivanenko. I'm a pupil of the eighth form. I get my edu. cation in a secondary school. It is one of the best in our town. The school is situated in a new district. I moved to this school two years ago. There are 300 pupils in our school. Our school is new, so we have all modern facilities: a computer room, a very nice library and two gyms. There is also a school stadium where school sports competitions are held. Unfortunately, we don't have a swimming pool in our districts and those who go in for swimming travel far for their trainings. We follow the regular timetable. So there are six lessons every day. We have two English lessons a week and we also learn German as a second foreign language. After classes we attend school clubs or read books in the library.





Speaker 2. My name is Taras Klymov. I live in the city and study in the City Hu- manitarian Gymnasium. Our gymnasium has a long history. It is more than 70 years old and has always been the centre of education in our city. The Gymnasium is situated in the centre of the city, next to a fabulous park. The central building of our gymnasium is rather far from the main road, so it is always quiet and lovely. I want to say that my gymnasium is very po- pular among the residents. We have wonderful school facilities, as well as a new swimming pool. The classrooms are equipped with televisions, compu. ters and whiteboards. There is also a big Information Technology Classroom with ten computers and a smart board. We like our lessons there. We study usual subjects such as Algebra, Geometry, Ukrainian, English, etc. and we also have some special courses. We study Law, Economics, Technical Trans- lation and Country Study. We also have more lessons in Ukrainian Language and Literature, so all the pupils have to plan their day carefully if they want to save time for after-school activities. We attend different sports clubs, the Gymnasium Choir, the Debate Club and others. We can choose a club to our personal interests and taste.5 a) Listen to the children talking about the schools they go to a school and a gymnasium. Complete the table. secondary A Secondary School Questions A Gymnasium Location and size Facilities School subjects After-school activities Speaker 1. My name is Olha Ivanenko. I'm a pupil of the eighth form. I get my edu. cation in a secondary school. It is one of the best in our town. The school is situated in a new district. I moved to this school two years ago. There are 300 pupils in our school. Our school is new, so we have all modern facilities: a computer room, a very nice library and two gyms. There is also a school stadium where school sports competitions are held. Unfortunately, we don't have a swimming pool in our districts and those who go in for swimming travel far for their trainings. We follow the regular timetable. So there are six lessons every day. We have two English lessons a week and we also learn German as a second foreign language. After classes we attend school clubs or read books in the library. Speaker 2. My name is Taras Klymov. I live in the city and study in the City Hu- manitarian Gymnasium. Our gymnasium has a long history. It is more than 70 years old and has always been the centre of education in our city. The Gymnasium is situated in the centre of the city, next to a fabulous park. The central building of our gymnasium is rather far from the main road, so it is always quiet and lovely. I want to say that my gymnasium is very po- pular among the residents. We have wonderful school facilities, as well as a new swimming pool. The classrooms are equipped with televisions, compu. ters and whiteboards. There is also a big Information Technology Classroom with ten computers and a smart board. We like our lessons there. We study usual subjects such as Algebra, Geometry, Ukrainian, English, etc. and we also have some special courses. We study Law, Economics, Technical Trans- lation and Country Study. We also have more lessons in Ukrainian Language and Literature, so all the pupils have to plan their day carefully if they want to save time for after-school activities. We attend different sports clubs, the Gymnasium Choir, the Debate Club and others. We can choose a club to our personal interests and taste.
Нужно заповнить таблицю срочно ​
Предмет: Алгебра, автор: saanbiimnea