math crossword

1. the enclosing boundary of a curved geometric figure, especially a circle.
3. a quantity which during a calculation is assumed to vary or be capable of varying in value.
6. the way in which something is shared out among a group or spread over an area
7. the result or effect of an action, situation, or event
8. a probable or the most probable event.
10. a unit of measurement of angles
12. a straight line from the center to the circumference of a circle or sphere
14. a straight line passing from side to side through the center of a circle
16. a quantity whose value is selected for the particular circumstances and in relation to which other variable quantities may be expressed.
18. a statement that the values of two mathematical expressions are equal
19. a portion drawn from a population, the study of which is intended to lead to statistical estimates of the attributes of the whole population.

2. a numerical quantity placed before and multiplying the variable in an algebraic expression algebra ,the part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations.
4. a rate, number, or amount in each hundred.
5. the rate at which something occurs over a particular period of time or in a given sample.
9. volume is the amount of space in a certain 3D object
11. a geometric figure
13. area, The area of the surface of a 3D object
15. the space occupied by a flat shape or the surface of an object.
17. the average or the most common value in a collection of numbers.