Build cis$-1,2-$dichloroethene. Build trans$-1,2-$dichloroethene. Draw the two molecules. Predict

the polarity of the molecules. $($C$-$Cl bonds are polar$).$

Build $1,1-$dichloroethene. Draw the structure below. Compare this molecule with the two

molecules from $10.$ How are they related $($same$,$ isomers, stereoisomers$)?$