12. The diagonals AC and BD of a parallelogram ABCD intersect each other at the point O. If ∠DAC = 32^o and ∠AOB = 70^o, then ∠DBC is equal to 12. The diagonals AC and BD of a parallelogram ABCD intersect each other at the point O. If ∠DAC = 32^o and ∠AOB = 70^o [...]