Class it up


i cant understand the reason for this error.
although i have defined angle 1 angle 2 and angle 3


angle1, angle2 and angle3 are undefined variable

that is why in __init__() method we create self.angle1, self.angle2 and self.angle3

now we can access the instance variables through self if we give check_angles a parameter of self


o great... ! yes self , was missing among the parameters
thank you very much


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