# Are pairs of triangles similar?Given information:12210202791.jpg

Are pairs of triangles similar?
Given information:

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insonsipthinye
Calculation:
in $\mathrm{△}ABC\phantom{\rule{1em}{0ex}}\text{and}\phantom{\rule{1em}{0ex}}\mathrm{△}DEF$
$\frac{AC}{DF}=\frac{10}{5}$
$\frac{AC}{DF}=2$
$\frac{BC}{EF}=\frac{7}{3}\frac{1}{2}$
$\frac{BC}{EF}=2$
But $\frac{AB}{DE}$ is not given.
Hence, $\mathrm{△}ABC\phantom{\rule{1em}{0ex}}\text{and}\phantom{\rule{1em}{0ex}}\mathrm{△}DEF$ are not similar.