What is a plane?

a.
a dimensioned hole
b.
a space between two intersecting lines
c.
a type of sectional view
d.
a flat surface

What made this representation of the virgin mary revolutionary

So my science teacher said anything that makes noise can in a way make music, instruments make music, and mayonnaise makes sound. so i have a question, do not report. is mayonnaise a instrument?

I’m the marriage of giovanni arnolfinj and giovanni cermani painted by jan van eyck the symmetry we may observe is primarily symmetry