Convaincre belong to the 3rd
group. Convaincre is a very common french verb.
Convaincre is conjugated the same way that verbs that end in : -cre
Convaincre is conjugated with auxiliary avoir
Convaincre verb is
French verb convaincre can be conjugated in the reflexive form: Se convaincre
verb is a direct transitive verb, so passive voice can be used.