Предмет: Геометрия, автор: kapchunova2011

Величины двух углов параллелограмма относятся как 4:5.Чему равны все углы параллелограмма?


alexbloger: "Все углы у параллелограмма" всегда равны 360 градусов. А ответ на вопрос о значениях каждого из углов данного параллелограмма, вам ответили. Неужели так сложно, написать нормально вопрос?)

Ответы

Автор ответа: faizullinalili1
4
 2           3
1          4

Пусть угол1=4х, угол2=5х.
4х+5х=180
9х=180
х=20 (одна часть)

угол1=углу3=4*20=80 градусов
угол2=углу4=5*20=100 градусов.
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Помогите с тестом ответы нужны
GRAMMAR TEST 1
A Complete the sentences with the verbs in the box.
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1 __________________________________________________
2 __________________________________________________
3 __________________________________________________
4 __________________________________________________
5 __________________________________________________

C Write questions for these answers.
0 What sports do you play?__________________
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1 When _________________________________ ?
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D Complete the questions with Do or Does and write short answers.
0 __Do__ your parents like rap music? (–)
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4 _______ she like comedy films? (–)
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5 _______ sports stars drive fast cars? (+)
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VOCABULARY
E Complete the sentences with at, on, in or to.
0 I don’t go out _in__ the evening.
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F Complete the sentences with words in the box.
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