Missing givens: Length of side of the paper is 10 in LN is the diagonal of the square
Answer: C) 10√2 in
Explanation: A square has 4 equal sides. This means that all four sides of the square are equal to 10 in. Now, folding a square diagonally will lead to the formation of two congruent right-angled triangles (check the attachment). We need to get the length of LN which is the hypotenuse of the right-angled triangle. This means that we can apply the Pythagorean theorem: (hypotenuse)² = (side1)² + (side2)² (LN)² = (10)² + (10)² (LN)² = 200 LN = √200 LN = 10√2 in
