Which phrase or sentence is the best TO CORRECT the underlined part :
Trả lời câu hỏi dưới đây:
The work of mathematician Roger Penrose in the early 1970s, on the geometry of what call aperiodic tiles, turned out to describe the architecture of a previously unknown class of crystals.
what are called aperiodic tiles, turned out to describe = những gì gọi là vòng tuần hoàn, cũng được miêu tả ...