Moses

2. The total area of the surface of a three-dimensional object.
4. a calculated "central" value of a set of numbers.
8. A triangle with all three sides of equal length.
9. How much of something per 1 unit of something else.
11. The sides are triangles which meet at the top
13. Numbers that are in opposite positions on the number line.
14. A whole number above 1 that cannot be made by multiplying other whole numbers.
16. The "middle" of a sorted list of numbers.
17. A flat shape with 4 straight sides where opposite sides are parallel.
19. The amount of 3-dimensional space something takes up.

1. A flat shape with four straight sides.
3. The distance around a two-dimensional shape.
5. A value that "lies outside"
6. What is left after all deductions have been made.
7. A solid object with two identical ends and flat sides.
10. A flat shape with 4 straight sides that has a pair of opposite sides parallel.
12. A triangle with two equal sides
15. A general term meaning 1
18. a single number or variable