"180 Degrees" refers to a half-circle measurement in geometry, representing an angle that is exactly half of a full rotation. In degrees, a complete circle is 360 degrees, so 180 degrees indicates a straight line. This concept is essential in various fields, including mathematics, physics, and engineering. In everyday life, "180 Degrees" can also describe a complete change in direction or perspective. For example, if someone changes their opinion on a topic, they might say they did a "180" on that issue. This phrase highlights the idea of a significant transformation or reversal in thinking.