Across
1
Part of a whole number
5
Distance from center to edge of circle
6
Mathematical statement of equality
8
Steepness of a line
9
Number less than zero
11
Proven mathematical statement
Down
1
Number that divides evenly into another
2
Middle value in an ordered dataset
3
Reference line in a graph
4
Value that does not change
7
Single numeral from 0 to 9
10
Longest side of a right triangle
12
System of ordered marks for measuring