Across
1
Total distance around a shape
6
Number with digits after a point
7
Value that does not change
10
The number representing nothing
11
Proven mathematical statement
13
Steepness of a line
Down
2
Math using letters for unknown values
3
Part of a whole number
4
Result of multiplication
5
Power to which a number is raised
8
Mathematical rule or equation
9
Distance from center to edge of circle
12
Sum divided by count
14
Part of a circle's circumference
15
Round shape with all points equidistant