Question

Given: ΔABC ≅ ΔFDE. . What is the length of segment DE rounded to the nearest tenth?. . 3.2. . 4.2. . 2.2. . 3.6. .

Answer 1

$d= \sqrt{(3-2)^2 + (1-4)^2 }$
$d= \sqrt{( x_{2}- x_{1})^2 + ( y_{2}- y_{1})^2 }$
$d= \sqrt{(1)^2 + (-3)^2 }$
$d= \sqrt{1+9 }$
$d= \sqrt{10 }$
$d= 3.2$
The length of segment DE is 3.2