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24.13.4  Measure of an angle in the plane

See Section 25.10.9 for angle measures in three-dimensional geometry.

The angle command finds the measure of an angle.

Examples

angle(0,1,1+i)
     
1
4
 π
          
angle(0,1,1+i,"a")
angle(0,1,1+i,"")
angle(0,1,i,"A")
angle(0,1,i,"A")[0]
     
1
2
 π
          

The angle command has angleat and angleatraw versions (see Section 24.13.1). For the command line versions of these commands, the optional fourth argument for angle is replaced by a mandatory fourth argument for the point to put the measurement.


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