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В треугольнике ABC высота BD является медианой. Найдите периметр треугольника ABC, если периметр ABD равен 15 см, высота BD равна 4 см
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Предмет:
Геометрия -
Автор:
romeobowers - 5 лет назад
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Ответы 1
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АД=ВД=4АВС равнобедренный АВ=ВСP(ABD) = P(BCD)=15P(ABC)=P(ABD) + P(BCD) - 2*BD = 15+15 -2*4=22
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Автор:
jasper29 - 5 лет назад
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IX. Fill in the missing words:
1. Jean looked ... when she came to the theatre (взволно ванный). 2. I ... the invitation with joy (принимать). 3. The play consists of three ... and four ... (акт; картина). 4. He ...
our help and said he could do everything himself (отка зываться). 5. When the ... rose and the audience saw the ...
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very well without the ... (места; ложа; сцена; бинокль). 8. The play made such an ... upon me that I would never for get it (впечатление). 9. I never expected that you would ...
our suggestion (поддерживать). 10. We made up our minds to ... a party in English (устраивать). 11. I don’t remember the name of the ... who played the ... part in the play (актер; главный). 12. Seats in the boxes and in the stalls are ... and seats in the gallery are ... (дорогой; дешевый). 13. She said she was telling the truth, but we ... her words (сомневаться).-
Предмет:
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Помогите пожалуйста, надо сдать сегодня
VIII. Choose the correct word :
to rise — to raise
1. He ... his head when he heard a slight noise. 2. When we started the sun had already ... . 3. There was a storm of ap plause when the curtain ... . 4. He ... his hat to greet us. 5. Ann slowly ... to her feet. 6. It was very noisy and the reporter had to ...
his voice. 7. The curtain wouldn’t ... and we had to ... it. stage — scene
1. The ... was so touching that Jean began to cry. 2. Carrie was told to come onto the ... in the second act. 3. The play consists of two acts and four ... . 4. When the actor appeared on the ... the audience began to applaud. 5. I don’t quite like the final ... in this play. 6. Our seats were in the orchestra stalls and we saw the ... well.-
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Автор:
cole58 - 5 лет назад
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Ответов:
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жазғы ауа райы диалог
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