Measurements of the CKM angle α/ϕ2 at the B Factories

We describe measurements related to the CKM angle α/ϕ2, using exclusive decays of B mesons to charmless hadronic final states. Time-dependent CP asymmetries, branching fractions and direct CP asymmetries in the B→ππ, B→ρπ and B→ρρ modes are considered. Constraints on the CKM angle α are obtained, and perspectives on future constraints are discussed.