Предмет: Геометрия, автор: spicuknika

дано:ABCD
AD=BC
кут А=120°
кутАВD=20°
кутВDC=40°
доведіть: AB=DC

ПОМОГИТЕЕЕ ПЖЖЖ СРОЧНО!!! ДАМ 50 БАЛЛОВ!!!

Ответы

Автор ответа: yaroslavkalinin2023

0

угол АСD вписанный опирается на дугу АD=37*2=74 градуса, угол АDВ тоже вписанный опирается на дугу АВ= 43*2=86, угол ВАD- вписанный опирается на дугу ВСD=360-74-86=200, следовательно угол ВАD=200/2=100 градусов

spicuknika: откуда вы все берете эти цифры не понятные мне нужно доказать а вы мне кут BAD находите в интернете не правильно

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Українська мова, автор: koladadima351

допоможить будь ласка даю 40 балив

1 год назад

Предмет: Физика, автор: stranna11

Терміново!! Даю 15 балів

1 год назад

Предмет: Английский язык, автор: oorzakcaana0

Read the article on the opposite page and decide which of these statements is true.

A The future of Dubai depends on oil.
B Dubai doesn't have much potential for development.
C Dubai has a future as a tourist destination and business centre.

Read the article again and answer the questions.
1 What are they building on the large man-made islands off the coast of Dubai?
2 How long will Dubai's oil production continue?
3 What attractions does the city-state have for tourists?
4 What is the population of Dubai? What percentage of the people are originally from the city-state?
5. What kinds of companies are setting up business in Dubai?

Which of the following is complete (C), under construction (U) or planned for the future (P), at the time of writing the article?

Dubailand Media City

Knowledge Village

Burj Dubai

Dubai Arabia's field of dreams One of the world's most successful business ventures is a small city-state that learned lessons from Singapore and Hong Kong. TROPICAL sun sets behind the palm beach. Here, machines are building houses on one of the world's largest man-made islands, designed in the shape of a palm tree (pictured). England's soccer stars, led by David Beckham, were among the early buyers when the 2,000 villas sold out in a week. Dubai expects its oil reserves to run out in about ten years. But the city-state is using its oil income to invest in a different sort of future, replacing oil with people. Today Dubai has 272 hotels with 30,000 rooms and almost 5 million foreign visitors a year. In the desert, Dubailand is being built-a $19-billion theme park twice the size of Disneyworld in Florida. The city-state has built huge tax-free shopping malls and launched sporting events, such as the Desert Classic golf tournament and the Dubai World Cup horse race, and so it has become a holiday destination, offering attractions such as desert safaris and dhow cruises. Dubai is open to foreigners. Of its 1.5 million people, over 80 per cent are expatriates. Dubai's easy-going style has made it a positive place to live and work. In Dubai's free-trade zones, no local partner is required. These zones are attracting the service sector, by sett up developments for multi-national companies specialising in similar activities. For example, Internet City houses regional offices of Microsoft, Siemens and IBM, among others. Media City is home to the regional offices of several TV stations. There are plans for a Knowledge Village, which may attract foreign colleges. Dubai intends to establish itself as the leading capital market for its region. The Dubai International Finance Centre is now taking shape, and the world's leading investment banks are already waiting to move in. The new city of skyscrapers includes Burj Dubai, an office block that will be the tallest building in the world when completed in a few years. Giorgio Armani is going to open a hotel on its top floors. If it succeeds, Dubai will not only be a tourist resort but an important business centre. M The Economist

1 год назад

Предмет: Алгебра, автор: tytyjo

Помогите с алгеброй.
Нужно 3 сделать.Заранее спасибо!

7 лет назад

Предмет: Физика, автор: milenandkristina

Помогите пожалуйста с ребусом по физике!

7 лет назад