SUMMER HOLIDAY PUZZLE

3. a flat surface which extends infinitely in all
6. forever in one direction
7. The equality of two ratios
10. A and B is called
11. A mathematical operation, written as bn, involving two numbers, the base b and the exponent or power n, and pronounced as "b raised to the power of n"
13. The number set {1,2,3,...} is called
14. The number set {...,-2,-1,0,1,2,3,...} is called
18. made by a piece of
19. A number that can be expressed as the quotient or fraction p/q of two integers.

1. The number set {0,1,2,3,...} is called
2. The distance from zero that a number is on the number line, without considering direction.
4. Let a and b be the think of the same quantities. a/b is called
5. Let A and B be two different points on a line. The set of these two points and all points lying
8. Angle has a measure that lies between 90 degree and 180 degree
9. In a fraction p/q, what q is called
12. Angle has a measure below 90 degree
15. In a fraction p/q, what p is called
16. a statement that asserts the equality of two expressions, which are connected by the equals sign "=".
17. Each dot on a paper made by a pencil or on a
19. A straight line that begins at a certain point and