Nettie knew some of the most basics of geometry, but he was speaking at a higher level than what she had learned or at least recalled. But then it became obvious he was flirting and her cheeks pinkened as she laughed and had to cover her mouth to stifle the noise. "You are quite a flatterer. I can not believe you'd use math for such an obscene thing." She said but the giant smile and sparkle of her eyes showed her happiness and that she was merely teasing him.