Answer:
True
Explanation:
You want to know if it is true that the diagonals of a square always bisect each other.
Diagonals
The diagonals of any parallelogram always bisect each other. A square is a parallelogram, so it is true that the diagonals of a square always bisect each other.
__
Additional comment
A square is also a rectangle, which means the diagonals are the same length. And a square is a rhombus, so the diagonals cross at right angles.