Classify the following as addition and condensation polymers: Terylene,Bakelite,Polyvinyl chloride,Polythene.

(N/A) Addition polymers are formed by the repeated addition of monomer molecules possessing double or triple bonds without the loss of any small molecules. Examples: $Polyvinyl \ chloride$,$Polythene$.
Condensation polymers are formed by repeated condensation reactions between two different bi-functional or tri-functional monomeric units,usually with the elimination of small molecules like $H_2O$,$HCl$,or $CH_3OH$. Examples: $Terylene$,$Bakelite$.