How many degrees are in a full circle?

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A full circle is defined as the complete rotation of 360 degrees. This measurement is rooted in the system of angles and geometry, where a circle encompasses all points that are equidistant from its center.

When we think about the concept of angles, a complete traversal around a circle returns to the starting point after rotating through 360 degrees. This division is fundamental in various applications, from navigation to trigonometry, where a full rotation is crucial for defining angular relationships.

The other choices—180 degrees, 720 degrees, and 90 degrees—represent specific portions or multiples of the angle measurements related to circles but do not embody the full rotation itself. For example, a straight angle is 180 degrees, representing half a circle, while 90 degrees is a quarter of a circle. A rotation of 720 degrees would indicate two complete circles, which is more than what's needed to describe a single full revolution. Therefore, the correct answer is that a full circle contains 360 degrees.

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