Mental Maths

1. every _______ number is a whole number
6. there are _______ many rational numbers between any two.given rational numbers
7. a greek genious who was first to compute digits in the decimal expansion of π
8. a line with two end points
11. a line with one end.point is knows as
14. the y coordinate is also called the ordinate
15. a two dimensional coordinate plane which is formed by the intersection of the x-axis and y-axis
17. if three or more points lie on the same line, they are called
18. vertically opposite angles are

2. the x coordinate is also.called the abscissa
3. hw introduced the cartesian system
4. the point of intersectionof horizontal and vertical lines determining the position of a point in a cartesian plane is called:
5. the coordinate axis divide the plane into four parts called:
9. a quadrant in which both x and y values are negative
10. numbers which can be represented in the form of p/q , q≠0
12. what is the rational number which does not have reciprocal?
13. what is formed when two rays originate from the same end point
16. a pair of angles whose sum is 180degree knows as