In the parallelogram $MNOP$, find $\angle O$?

In a rhombus $ABCD, \angle AOB=\left(7z+6\right)°$, and $\angle DAO=\left(5z+1\right)°$. Find $\angle CDO$ and $\angle DCB$.

In kite $PQRS, \angle SRT=24°$ and $\angle TSP=53°$. Find $\angle SPT$ and $\angle PSR$.

Given $ABCD$ ABCD is a rhombus and $DF=BE$.DF=BE Prove that $∆ABE\cong ∆DFC$. Triangle ABE is congruent to triangle DFC