https://www.codecademy.com/en/courses/python-intermediate-en-WL8e4/3/3?curriculum_id=4f89dab3d788890003000096#

I get the following error

error: Oops, try again. It looks like you didn't initialize my_triangle with valid angle values.

It should print the value "True"

```
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,angle1,angle2,angle3):
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("90","30","60")
```