  We present the results of the X-ray polarimetric analyses performed on
unobscured radio-quiet Active Galactic Nuclei (AGN) with the Imaging X-ray
Polarimetry Explorer (IXPE), with simultaneous XMM-Newton and NuSTAR data. The
synergy of these instruments is crucial to constrain the X-ray corona physical
properties and assess its geometry. In the first two years of operation, three
AGN have been observed: significant polarization was detected for NGC 4151
(4.9$\pm$1.1 per cent) and IC 4329A (albeit with less confidence, 3.3$\pm$1.1
per cent), with polarization angles aligned with their radio jets, while only
an upper limit was found for MCG-05-23-16 ($<$3.2 per cent). Monte Carlo
simulations, conducted to investigate the coronal geometry of these AGN, favor
a radially extended corona geometry in NGC 4151 and IC 4329A, a scenario
consistent also with MCG-05-23-16, if the disk inclination angle is below
50$^\circ$.
