Across
1
Rectangle with four equal sides
4
Power to which a number is raised
7
Rectangular array of numbers
8
Distance from center to edge of circle
10
Difference between highest and lowest values
11
Middle value in an ordered dataset
14
Repeated addition
Down
2
Number with digits after a point
3
Proven mathematical statement
5
Single numeral from 0 to 9
6
Value that does not change
9
Split into equal parts
12
Lines that never intersect
13
Exact correspondence on both sides