hailuong2307

Câu 1) ΔABC vuông tại A, đường cao AH ( H ∈ BC) thì ta có: A. AH ² = BH.HC B. AH ² = AB.BC C. AH ² = AB.AC D. AH ² = AC.BC Câu 2) ( O ; 3cm) tiếp xúc ngoài với ( O ; 2cm) thì OO' bằng A. 3 cm B. 1 cm C. 5 cm D. 2 cm - ths

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vuongthanhy07

$#Hy$

Câu `1) ΔABC` vuông tại `A`, đường cao `AH ( H ∈ BC)` thì ta có:
`=> A. AH^2 = BH.HC`
`+` Hệ thức lượng thứ 2: Trong tam giác vuông, bình phương đường cao ứng với cạnh huyền bằng hình chiếu của 2 cạnh góc vuông trên cạnh huyền

Câu `2) ( O ; 3cm)` tiếp xúc ngoài với `( O ; 2cm)` thì `OO'` bằng

`=> C. 5 cm`

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Câu 1) ΔABC vuông tại A, đường cao AH ( H ∈ BC) thì ta có: A. AH ² = BH.HC B. AH ² = AB.BC C. AH ² = AB.AC D. AH ² = AC.BC Câu 2) ( O ; 3cm) tiếp xúc ngoài với ( O ; 2cm) thì OO' bằng A. 3 cm B. 1 cm C. 5 cm D. 2 cm - ths

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Viết một đoạn văn hoàn chỉnh về lý do học tiếng Anh bằng cách đưa ra các manh mối ( ko chép mạng nhá)

việt nam dành độc lập vào năm nào

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

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Câu 1) ΔABC vuông tại A, đường cao AH ( H ∈ BC) thì ta có: A. AH ² = BH.HC B. AH ² = AB.BC C. AH ² = AB.AC D. AH ² = AC.BC Câu 2) ( O ; 3cm) tiếp xúc ngoài với ( O ; 2cm) thì OO' bằng A. 3 cm B. 1 cm C. 5 cm D. 2 cm - ths

1 câu trả lời

Viết một đoạn văn hoàn chỉnh về lý do học tiếng Anh bằng cách đưa ra các manh mối ( ko chép mạng nhá)

việt nam dành độc lập vào năm nào

Choose the best answer.I think you should buy _____ pack of mineral water instead. And you can also buy _____ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______ cookies and soft candies.

Choose the best answer.We should decorate our living room with _____ orange banner. We also need ________ ribbons, balloons, party hats and costume.

Choose the best answer.I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

Đề thi - đề kiểm tra Xem thêm

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.