How to rotate points given in square grid? 
I really hope you can see this picture.
So My question is 
1) If the figure is rotated 90 degrees counter clock wise about Point O, then:
$$a. G to _________$$ 
$$b. _________ to P $$
How would i rotate i don't even know how to start this?

Imagine a line from $O$ to $G$ and $O$ to $P$. What points form a line with $O$ that is $90$ degrees to these lines?
Taking the direction of the rotation into account, then you would get
$$G \text{ to } E$$
and
$$N \text{ to } P$$
