Across
1
Value that does not change
6
System of ordered marks for measuring
7
Split into equal parts
8
Number divisible only by 1 and itself
9
Number greater than zero
11
Single numeral from 0 to 9
Down
2
Proven mathematical statement
3
Number with digits after a point
4
Part of a line with two endpoints
5
Power to which a number is raised
6
Rectangle with four equal sides
10
Sum divided by count