At the beginning of the Renaissance the knowledge of maths was more or less the same as in ancient Greece. There was quite some knowledge about geometry and logic. During Renaissance, however, some major advances were made.
The general populace knew very little, but there were certain learned men who had recovered (recently) the mathmatics of the Greeks which was actually quite complex and relevant to today's.
Although the Renaissance is best known as a social movement, it was also an important time in the history of math. Due to the increased complexity of commerce during this period, new methods of mathematics emerged.
