```
def isReflected(self, points):
"""
:type points: List[List[int]]
:rtype: bool
"""
if len(points) == 0:
return (True)
hold = []
for p in points:
hold.append(p[0])
x = float(max(hold)+min(hold))/2
for p in points:
yrp = p[1]
xrp = x - (p[0] - x)
if [xrp, yrp] not in points:
return (False)
return (True)
```