Cho biết $\frac{AB}{CD}=\frac{A'B'}{C'D'}=\frac{3}{4}$. Hãy chọn ph

Question

Cơ bản

Cho biết $\frac{AB}{CD}=\frac{A'B'}{C'D'}=\frac{3}{4}$. Hãy chọn phát biểu sai trong các phát biểu sau:

4 câu trả lời

Answer 1

$\frac{AB}{A'B'}=\frac{CD}{C'D'}$

Answer 2

$\frac{AB}{A'B'}=\frac{3}{4}$

Answer 3

$\frac{A'B'}{C'D'-A'B'}=3$

Answer 4

$\frac{AB}{AB+CD}=\frac{3}{7}$