Предмет: Геометрия, автор: berikovernar528

Найдите внешний угол при Третьей вершине треугольника если два других угла равны ​

Приложения:

Ответы

Автор ответа: Reideen
4

Внешний угол равен сумме двух углов, не смежных с ним, то есть ∠ВСD=∠А+∠В.

Таким образом:

1)∠α=54°+36°=90°;

2)∠α=42°+78°=120°;

3)∠α=65°+35°=100°;

4)∠α=33°+120°=153°.

α-внешний угол.

Приложения:
berikovernar528: спасибо от души
Предыдущий вопрос
Следующий вопрос
Интересные вопросы
Предмет: Математика, автор: evayatcenko2010
Встановіть радіус кола якщо довжина цього кола 18п см​
5 лет назад
Предмет: Английский язык, автор: 6Nike6
“Travelling”
Task I. Read and match
1 voyage A) make a journey, typically of some length or abroad.
2 ticket B) a good or useful quality that something has
3 travel C) a piece of paper that gives the holder a certain right to travel by public transport
4 luggage D) a trip from one place to another
5 advantage E) a long trip, especially in a ship
6 journey F) the bags carried by the people who are traveling

1. ___ 2. ___ 3. ___ 4. ___ 5. ___ 6. ___

Task II. Complete the sentences with should or shouldn’t.
1. If you are in a crowded city you ____________ be careful with your money.
2. When you go to London, you __________ visit Westminster Abbey.
3. You ___________ go to the airport before an hour.
4. We ____________ prepare for our trip well.
5. You ___________ walk alone in a strange city.
6. If someone doesn’t speak your language well, you ___________ speak fast.

Task III. Complete the sentences with to, too or two.
1. This bus leaves at ______ o’clock.
2. It takes _______ much time to get to his house on foot.
3. His uncle is going ______ the railway station.
4. I’m ______ busy now.
5. She has ______ pets at home.
6. I want ______ show you my sea photos.

Task IV. Read and complete the text with the missing parts.
a) by plane or train
b) by ship and by boat
c) to another
d) in summer
e) go sightseeing
f) people’s traditions
People are fond of travelling. They can travel by car or bus, (1) _____, on foot or (2) ______. Large ships, modern airplanes and comfortable trains carry passengers from one place (3)_____. Railway stations and airports are always busy places on holidays and (4)______. People pack their luggage onto their suitcases, bags or rucksacks. They hurry to visit their relatives or friends. Travelling is very pleasant and interesting. We (5)______ in different cities and visit famous cathedrals, museums, theatres, cinemas. We enjoy nature and learn more about (6)______.

Помогите пожалуйста даю 20б
5 лет назад
Предмет: География, автор: karolina1652
які міста україни виконують рекреаційну функцію?
5 лет назад
Предмет: Математика, автор: Ева111111111н
как найти стороны квадрата если периметр равен 144
9 лет назад
Предмет: Математика, автор: zubi1984
как сделать чертёж к задаче собака погналась за лисой
9 лет назад