class Triangle(object):
	number_of_sides = 3
	def __init__(self, angle1, angle2, angle3):
		self.angle1 = angle1
		self.angle2 = angle2
		self.angle3 = angle3

	def check_angles(self):
		if self.angle1 + self.angle2 +self.angle3 ==180:
			return True
		else:
			return False
my_triangle = Triangle(90,30,60)
print (my_triangle.number_of_sides)
print (my_triangle.check_angles())

class Equilateral(Triangle):
	angle = 60
	def __init__(self):
		self.angle1=self.angle
		self.angle2=self.angle
		self.angle3=self.angle
