Across
1
Steepness of a line
5
Reference line in a graph
6
Single numeral from 0 to 9
7
Distance from center to edge of circle
8
Part of a whole number
9
System of ordered marks for measuring
10
Corner point of a polygon
15
Value that does not change
Down
2
Number greater than zero
3
Line crossing from corner to corner
4
Total distance around a shape
11
Sum divided by count
12
Difference between highest and lowest values
13
Math using letters for unknown values
14
Longest side of a right triangle