Drawing puzzle

[MikeF]

This is one of those "can you draw it without lifting your pencil and retracing any lines" type puzzles.

Here's the picture:


I believe the box with diagonals is impossible, but not sure about the one with "loops" around it...

Anyone have a solution?

[shadow]

Impossible.

Any figure with more than 2 odd-numbered vertices cannot be drawn without retracing or lifting your pencil.

[voodoopenguin]

[quote shadow]Impossible.

Any figure with more than 2 odd-numbered vertices cannot be drawn without retracing or lifting your pencil.
You got there before me. We did them as end of term fun school games about 40 years ago and I was good at counting the odd numbered vertices in much more complicated drawings.