We report the first electron neutrino cross section measurements on argon, based on data collected by the ArgoNeuT experiment running in the GeV-scale NuMI beamline at Fermilab. A flux-averaged νe+ν¯e total and a lepton angle differential cross section are extracted using 13 νe and ν¯e events identified with fully automated selection and reconstruction. We employ electromagnetic-induced shower characterization and analysis tools developed to identify νe/ν¯e-like events among complex interaction topologies present in ArgoNeuT data (⟨Eν¯e
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