Puzzle of the Week, 9/13/98

For the first puzzle of the week, you'll get more than just one puzzle. They're kind of in the way of a warm-up...
1. A large family consists of seven sons, each with one sister. How many children are in the family?
2. Seven has five, nine has four, and six has three, but how many does fourteen have?
3. Your two new classmates Tori and Toni are identical twins. Tori always lies, and Toni always tells the truth. Can you ask a single question of either one of them that will determine who is who?
4. Divide the below figure into two identical parts.

