What is a vanishing point? A. An initial painting used as a base for glazing or further painting
B. A technique in which objects are made to seem farther away with
the adjustment of color hues and reduction in the size of the
objects
C. The combination of a color with black to make it darker; the
opposite of tint
D. The point at which parallel lines seem to meet and disappear on
the horizon

this exemplifies - rondo form

i believe the answer is  the similarity is that both are sacrifices which have the same purpose and sacrifice - jesus christ, but the difference is in offering of that sacrifice.

the similarity is that both are sacrifices which have the same purpose (repenting our sins) and sacrifice - jesus christ.  the difference is in the way of the offering that sacrifice. the sacrifice of jesus on the calvary is sacrifice of his actual living body and blood, but the sacrifice of the mass is the sacrifice of the jesus through bread (body) and blood (wine). in the sacrifice on calvary jesus was offered for us; while at mass he offers himself through us.