------
## 最终结论
```python
def right_angle_triangle(a, b, c):
    longest_side = max(a, b, c)
    if longest_side == a:
        return a**2 == b**2 + c**2
    elif longest_side == b:
        return b**2 == a**2 + c**2
    else:
        return c**2 == a**2 + b**2
```