ANSWER:
7.07 centimeters
Explanation:
We can calculate the distance between the corners by means of the Pythagorean theorem, since if we cross the line, we have a right triangle as a result.
The Pythagorean theorem states the following;

Where a and b are the sides and c would be the distance between the corners, we replace and solve for c, like this:
![\begin{gathered} c^2=5^2+5^2 \\ c^2=25+25 \\ c=\sqrt[]{50} \\ c\cong7.07\text{ cm} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/fka6i8mw5inlnt2n7yzfb2v6zz4oc8a69q.png)
The distance between both corners is 7.07 centimeters