  Cherenkov radiation (CR) generated by a charge moving along one of the faces
of a dielectric prism is analyzed. Unlike our previous papers, here we suppose
that the charge moves from the the prism ``nose'' to its base. For CR analysis,
we use the technique described in our previous papers and called the ``aperture
method''. However, here we develop a new version of this technique which is
suitable for objects with plane faces: it utilizes field expansion only over
plane waves inside the object. This approach is especially convenient for
objects having two or more plane interfaces on which the waves are reflected
and/or refracted. Using this technique, we obtain the electromagnetic field
distribution over the aperture and then apply Stratton-Chu formulas (aperture
integrals). Further, the main attention is paid to the calculation of the
radiation field in the Fraunhofer (far-field) area. It is notable that we
obtain expressions for corresponding Fourier transforms in the form of single
integrals. Using them, the series of typical angular diagrams are computed and
physical conclusions are made.
