[en] The proton elastic form factors G_Ep(Q²) and G_Mp(Q²) have been extracted for Q²=1.75 to 8.83 (GeV/c)² via a Rosenbluth separation to ep elastic cross section measurements in the angular range 13 degree ≤θ≤90 degree. The Q² range covered more than doubles that of the existing data. For Q²<4 (GeV/c)², where the data overlap with previous measurements, the total uncertainties have been reduced to < 14% in G_Ep and < 1.5% in G_Mp. Results for G_Ep(Q²) are consistent with the dipole fit G_D(Q²)=(1+Q²/0.71)^-2, while those for G_Mp(Q²)/μ_pG_D(Q²) decrease smoothly from 1.05 to 0.92. Deviations from form factor scaling are observed up to 20%. The ratio Q²F₂/F₁ is observed to approach a constant value for Q²>3 (GeV/c)². Comparisons are made to vector meson dominance, dimensional scaling, QCD sum rule, diquark, and constituent quark models, none of which fully characterize all the new data