\(\left|\overrightarrow{CA}+\overrightarrow{BC}\right|=\left|\overrightarrow{CA}-\overrightarrow{CB}\right|=\left|\overrightarrow{BA}\right|=BA=10\sqrt{2}\)
\(\left|\overrightarrow{BC}-\overrightarrow{BA}\right|=\left|\overrightarrow{AC}\right|=5\left(cm\right)\)