Аннотация:The precise determination of the angles of the Unitarity Triangle can put tight constraints on the flavor sector of the Standard Model, by probing the validity of the Cabibbo-Kobayashi-Maskawa scheme. The measurement of time-dependent CP asymmetries provides the main experimental means to determine the angles alpha and beta. The present status of the knowledge of these two angles and a summary of recent measurements performed by the BABAR, Belle and LHCb experiments are reported in this proceedings article.