Let $P$ denotes a complex number $z=r\left(\cos \theta +i\sin \theta \right)$ on the Argand's plane, and $Q$ denotes a complex number $\sqrt{2{\left|z\right|}^2}\left(\cos \left(\theta +\frac{\pi }{4}\right)+i\sin \left(\theta +\frac{\pi }{4}\right)\right)$. If ${}^{\prime }{O}^{\prime }$ is the origin, then $\Delta OPQ$ is

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