How many degrees are in a straight line?

A straight line measures 180 degrees. This is a fundamental concept in geometry, as it defines the angle created by two rays that originate from the same point and extend in opposite directions. When you envision a straight line, you can also think of it as half of a complete circle, which measures 360 degrees. Thus, dividing the circle into two equal parts gives us a straight angle of 180 degrees.

This understanding of linear angles is crucial in various geometrical applications, including transversals intersecting parallel lines, where understanding angles formed helps in determining various properties and relationships between shapes. Recognizing that a straight line represents an angle of 180 degrees is foundational for other geometric principles, making it an essential concept in the study of mathematics.