Across
- 1. _____is the smallest prime number.
- 4. Two _____ lines will never have a common point.
- 5. The biggest factor of a number is the________ itself.
- 6. When two even numbers are multiplied, we always get an ______ number.
- 7. An angle who measure is less than that of a right angle is_______.
Down
- 1. Pairs of prime numbers whose difference is 2 are called _______.
- 2. Number which is neither prime nor composite.
- 3. A natural number is called a _____number if it has more than two different factors.