Question

look at the table
area of achievement
philosophy: combined Islamic faith with Greek logic
medicine: published a medical encyclopedia
mathematics: ?
which achievement completes the table
invented the telescope
spread the concept of zero
invented geometry
used Roman numeral

Answer 1

The achievement that completes the table in the area of mathematics is "spread the concept of zero." This is a significant mathematical advancement attributed to scholars in the Islamic Golden Age, which aligns well with the other achievements listed in the table.