\begin{definition}[Definition:Angle/Unit/Degree]
The '''degree (of arc)''' is a measurement of plane angles, symbolized by $\degrees$.
{{begin-eqn}}
{{eqn | o = 
      | r = 1
      | c = '''degree'''
}}
{{eqn | r = 60
      | c = minutes
}}
{{eqn | r = 60 \times 60 = 3600
      | c = seconds
}}
{{eqn | r = \dfrac 1 {360}
      | c = full angle (by definition)
}}
{{end-eqn}}
\end{definition}