Question $1[2$ pts$]$: Figure $1$ shows eight instances from three classes $($red star, green plus, and blue circle$).$ The $\backslash ($ x $\backslash )-$axis and the $\backslash ($ y $\backslash )-$axis denote two features.

$-$ Use Euclidean distance, please draw Vorinio diagram $($or Vorinio cells$)$ of the instances. $\backslash (1\backslash$mathrm$\{$pt$\}]\backslash )$

$-$ Please draw the decision boundary and decision regions for a $1-$nearest neighbor classifier $[0\mathrm{.}5$ pt$],$

$-$ Explain how does $1-$nearest neighbor classifier classify an instance $[0\mathrm{.}5$ pt$]$

Figure $1$