Maths words

4. The branch of mathematics where letters and symbols represent unknown numbers.
8. The middle number in an ordered list of data.
9. A straight line from the center to the circumference of a circle.
11. A mathematical statement showing that two expressions are equal.
12. A numerical representation of a part of a whole.
13. A whole number, including negative numbers, zero, and positive numbers.
15. The result of multiplying numbers.
16. A closed, 2-dimensional geometric figure with at least three straight sides.
17. The measure of surface enclosed by a shape's boundaries.
18. The result of dividing numbers.
20. The amount of 3-dimensional space occupied by an object.

1. A straight line passing through the center of a circle from side to side.
2. A number that divides another number exactly, leaving no remainder.
3. The average value of a data set.
5. An angle measuring less than 90 degrees.
6. A whole number greater than 1 that can only be divided evenly by 1 and itself.
7. The continuous distance around the outside of a shape.
10. The result of subtracting one number from another.
14. The result of adding numbers.
19. An angle greater than 90 degrees but less than 180 degrees.