Answer:
Option 1,2,3,5 are true for all squares.
Explanation:
Option 1 is true for all square because diagonals are perpendicular to each other.
Hence, Option 1 is correct
Option 2 is true because length of diagonal in a square is equal hence, they are congruent.
Hence, Option 2 is correct.
Option 3 diagonals of a square bisect the vertex angles.
Hence, option 3 is correct.
Option 4 diagonals of square are not congruent to the sides of sqaure because they have different length.
Hence, option 4 is incorrect.
Option 5 diagonals bisect each other in a square
Hence, option 5 is correct.