Предмет: Математика, автор: Aina2015

постройте в тетради отрезок ОА и проведите окружность радиусом ОА.проведите радиусы ОВ,ОС и ОD так,чтобы <АОВ=45°,<АОС=90° ,<АОD=135°. чему равен угол DOB?

Ответы

Автор ответа: mirandakeitons

это просто. угол DOB = угол AOD - угол AOB = 135 - 45 = 90 град.

Похожие вопросы

Предмет: Биология, автор: nata5543

5 Установите соответствие: (3 балла)
Виды Мышечной ткани
Функции
1.Гладкая
А. обеспечивает работу миокарда
2.Поперечнополосатая скелетная в. обеспечивает движения стенок полых
внутренних органов и сосудов
С. Обеспечивает движение скелета
3.Поперечнополосатая
сердечная

6 лет назад

Предмет: Английский язык, автор: sasabanchenco

Grammar topic “Modal verbs” Choose the appropriate modal verb 1) Bill ___________ (should / must / can / shouldn't) drink milk every day. He is very thin. 2) Students ___________ (shouldn't / should / must / can) leave the classroom before the ring bells. 3) You ___________ (should / shouldn't / must / can) brush your teeth after breakfast. 4) Your father ___________ (should / must / would / can) stop smoking. 5) ___________ (Can / Must / Should / Would) you pass my pencil to me? 6) You ___________ (mustn't / shouldn't / can't / couldn't) talk aloud in the library. 7) You ___________ (mustn't / should / can / could) smoke cigarette in hospital. 8) We ___________ (should / must / can / could) visit our grandparents more often. 9) You ___________ (shouldn't / mustn't / can't / can) touch burning things. 10) You ___________ (mustn't / can't / shouldn't / couldn't) drive too fast in the city. Choose the right modal verb 1) _________ you speak French? - Only a few words, but my Russian is pretty good. ( ) Can ( ) Must ( ) Could ( ) May 2) You __________ eat so much chocolate. It’s not good for you. ( ) shouldn't ( ) mustn't ( ) don't have to ( ) needn't 3) I __________ talk already before I was two years old. ( ) could ( ) should ( ) would ( ) can 4) I __________ move the table. It was too heavy. ( ) couldn't ( ) mustn't ( ) shouldn't ( ) wouldn't 5) You __________ put your feet on the cafeteria tables. ( ) don't have to ( ) mustn't ( ) shouldn't ( ) wouldn't 6) If you don’t start working harder, you ________ repeat the course next year. ( ) will have to ( ) must ( ) have to ( ) should 7) You ____ take a mobile phone into the exam. ( ) mustn't ( ) can't ( ) shouldn't ( ) don't have to 8) I know that he intended to go but he _________ have stayed. ( ) may ( ) can ( ) should ( ) must 9) Bob's car has broken down: he _______ go to work. ( ) can't ( ) may not ( ) must not ( ) should not 10) They _____

6 лет назад

Предмет: География, автор: ZagirSuleimanov2004

Памагите решить географию 9 класс пж даю 100 баллов

6 лет назад

Предмет: Математика, автор: rusiksik05

помогите найти периметр

9 лет назад

Предмет: Математика, автор: kosizum

Не могу понять почему при делении в столбик 545:5 получаем 109. Откуда, при делении в столбик, между 1 и 9, появляется 0?

9 лет назад