A. I had pizza yesterday
B. Really? Wow! Do you have pizza often?
A. Yes, I do. I have pizza almost everyday. Did you have pizza yesterday.
B. No, I didn't. I had broccoli.
A. Are you having pizza tomorrow?
B. No, I am not. I am having a sandwich tomorrow.
This is math, not English, but okay xD
"Two intersecting lines are perpendicular if and only if they form four 90 degree angles" would be my answer.
