So I'm stuck in here, anyone got a clue what I did wrong?
The Error Message says
Oops, try again. Make sure to pass self as an argument to your check_angles method!
class Triangle(object): def __init__(self, angle1, angle2, angle3): self.angle1 = angle1 self.angle2 = angle2 self.angle3 = angle3 number_of_sides = 3 def check_angles(self): if sum(self.angle1, self.angle2, self.angle3) == 180: return True else: return False