Answer:
13
Step-by-step explanation:
Hi! Use the height and length of the line to form the line into the hypotenuse of a triangle. The Pythagorean Theorem can be used to find the length of the line.
Side a is 5 squares high
Side b is 12 squares long
Side c (the line) is x squares long
a^2+b^2=c^2
5^2+12^2=x^2
x can equal 13 or -13 (because of square rules) but in this case it's thirteen because length can't be negative
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