In the first picture it looks like a boy
IMO your angel is WAY to young to determine sex. And there is no 100% way to sex angelfish the only for sure way to know is to wait until they spawn.
When it gets half dollar sized or so, then you can probably start seeing it a little more.
Males tend to have a hump on their head. The females are smooth.
But then again, it's not 100%. My male angel (proven male) has no hump.