The term 'approach to a problem' can be summarized as an ANGLE, which is a five-letter word. An ANGLE is defined as the space between two lines or planes that meet at a common point. It is also used to describe the direction in which something moves or develops. In terms of problem solving, an ANGLE is a way of looking at a problem from a different perspective in order to find a solution. This could involve breaking down the problem into smaller parts, or looking at it from a different ANGLE to gain a better understanding of the issue.