@ beybladerextreme

I thought so initially as well but then there is something wrong with your code I had:

```
def check_angles(self,angle1,angle2,angle3):
if sum(angle1 + angle2 +angle3)==180:
return True
else:
return False
```

but it should of been slightly different all though the above gave me a pass. I changed the sum part and also the arguments this caused my code to get an error if I don't say

`print my_triangle.check_angles()`

```
def check_angles(self):
if self.angle1 + self.angle2 + self.angle3 ==180:
return True
else:
return False
```

so the whole block of code that prints correct values and gets a pass is like suggested is:

```
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()
```