Good Riddles

Question: If you have a cake, how many pieces of cake can you form with 3 straight cuts?

Question: When you stand up he sleeps When you sleep he stands Who is it?

Question: Look at me I want to play.
I'll move like you in every way.
Be tricky, but the result is always a draw.
Why? Because I'm an expert at response and call.

What am I?

Question: How do you fix a broken pizza?

Question: I come in many different colors. I create boundaries to keep things concealed and safe. My best friend is a lock and I am also made of different materials as well. I love to travel: you can find me anywhere. What am I?