Alexander walks into the kitchen carrying a math textbook. He finds Maria making waffles.

'Would you like a waffle?' she asks.

'I love waffles!' he replies.

Maria is a friend of Alexander's mom, staying at their house while attending a symposium. Maria is a mathematician at the University of the Aegean, in Rhodes, Greece.

Maria notices Alexander's book. 'Are you doing some math?' she asks, placing a waffle on Alexander's plate

'I've been looking at Timothy's textbook. He'll be studying parallel lines next week,' says Alexander as he traces parallel ridges on his waffle. 'Is a square a parallelogram?' he asks.

'What do you think?'

'I think it is. But it's a special parallelogram.'

'How is it special, Alexander?'

'All of its sides are equal. So are all of its angles,' says Alexander, tracing a parallelogram on the ridges of his waffle.

'What about a rhombus?' asks Maria.

Alexander flips to the glossary at the back of his brother's book. He reads aloud: 'A rhombus is a parallelogram with equal sides.' Alexander thinks for a minute. 'So a square is a rhombus too, isn't it Maria?'

'It is,' concurs Maria, as she puts another waffle on Alexander's plate.

As Alexander pours syrup over the waffle, he ponders: 'Do parallel lines ever meet?'

'Now that's a great math question!' exclaims Maria, with a sparkle in her eye.

Alexander finishes his second waffle and pours a glass of orange juice.