Answer:
The true statements are
The diagonals are congruent to each other.
The diagonals are perpendicular.
The diagonals bisect the vertex angles.
Step-by-step explanation:
For the SQUARE given below we have
The diagonals AC and DB are congruent to each other.
The diagonals are perpendicular.
m∠ AOB ,m∠AOD,m∠COD and m∠BOC are each 90°
The diagonals bisect the vertex angles.
m∠DAC and m∠BAC are each 45° for vertex A
Similarly for vertices B,C and D