
Toán 8
Authored by Vân Vũ Thị Ái
Mathematics
8th Grade
Used 121+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
theo tỉ số đồng dạng k = 7. Nếu AB = 14cm thì A'B' = ?
7cm
2cm
14cm
0,5cm
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
theo tỉ số đồng dạng k = . Biết B'C' = 24cm thì BC = ?
16cm
14cm
15cm
17cm
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
theo tỉ số đồng dạng k = 2. Khi đó tỉ số chu vi của và chu vi của là:
2
4
0,125
0,5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
theo tỉ số đồng dạng k = . Nếu B'C' = 27cm thì BC =?
9cm
27cm
3cm
18cm
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cho hình vẽ sau:
Khi đó ta có:
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cho hình vẽ,
biết theo tỉ số k = . Khi đó x =?
4
6
8
12
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
có: AB = 5cm; AC = 5cm; BC = 2cm. theo tỉ số k = 2. Khi đó chu vi là:
26cm
24cm
28cm
25cm
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