Question

is $overline{eg}congoverline{df}$?

Explanation:

Step1: Calculate length of $\overline{EG}$

$EG=\vert - 857-(-859)\vert=\vert - 857 + 859\vert = 2$

Step2: Calculate length of $\overline{DF}$

$DF=\vert - 859-(-861)\vert=\vert - 859 + 861\vert = 2$

Step3: Compare lengths

Since $EG = DF=2$, $\overline{EG}\cong\overline{DF}$

Answer:

yes