Degree (angle)
A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of a plane angle in which one full rotation is 360 degrees.
| Degree | |
|---|---|
One degree (shown in red) and eighty nine degrees (shown in blue). The lined area is a right angle. | |
| General information | |
| Unit system | Non-SI accepted unit |
| Unit of | Angle |
| Symbol | °, deg |
| Conversions | |
| 1° in ... | ... is equal to ... |
| turns | 1/360 turn |
| radians | π/180 rad ≈ 0.01745.. rad |
| milliradians | 50·π/9 mrad ≈ 17.45.. mrad |
| gons | 10/9g |
It is not an SI unit—the SI unit of angular measure is the radian—but it is mentioned in the SI brochure as an accepted unit. Because a full rotation equals 2π radians, one degree is equivalent to π/180 radians.
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