Homonym: 0° (Temperature)
The term "0°" can refer to several contexts, but it is most commonly associated with temperature and angles. In temperature, 0° Celsius (°C) is the freezing point of water, while 0° Fahrenheit (°F) is a much lower temperature, equivalent to about -17.8°C. These scales are used to measure how hot or cold something is, with 0° marking a significant transition point.
In geometry, 0° represents a specific angle in a circle. It is the starting point for measuring angles in degrees, where a full rotation around a circle is 360°. At 0°, a line is typically aligned with the positive x-axis in a Cartesian coordinate system, serving as a reference for other angles.