Across
1
Line touching circle at one point
4
U-shaped curve of a quadratic function
6
System of ordered marks for measuring
8
Parts per hundred
10
Power to which a number is raised
11
Part of a line with two endpoints
Down
2
Part of a whole number
3
Mathematical statement of equality
5
Split into equal parts
7
Number greater than zero
9
Value that does not change
12
Sum divided by count