[en] The proton elastic electric and magnetic form factors, G_Ep(Q²) and G_Mp(Q²), have been separately measured in the range Q²=1.75 to 8.83 (GeV/c)², more than doubling the Q² range of previous data. Scaled by the dipole fit, G_D(Q²), the results for G_Mp(Q²)/μ_pGD(Q²) decrease smoothly from 1.05 to 0.91, while G_Ep(Q²)/G_D(Q²) is consistent with unity. Comparisons are made to QCD sum rule, diquark, constitutent quark, and vector meson dominance models, none of which agree with all of the new data. The ratio Q²F₂/F₁ approaches a constant value for Q²>3 (GeV/c)²