Quote by Soca fo so
Spoiler
1. 3
number of straight lines equals number of curved lines

What exactly do you mean? Counting curved line segments, I get:
2 1 4 4 1 10
4 2 0 OR: 10 2 0
2 1 ? 2 1 ?
And counting straight line segments, I get:
0 1 1 0 2 3
0 4 4 OR: 0 8 4
1 2 ? 3 4 ?
How do the numbers of curved vs. straights relate?
[edit]
Spoiler
I did just notice an interesting pattern with the number of intersections, though. The number of curved line segments in each square is equal to the number of line *intersections* (not corners). Which would similarly make the answer #3. Huh. I like that answer, actually.
DaveE