Across
1
Rectangular array of numbers
4
Number greater than zero
6
System of ordered marks for measuring
7
Single numeral from 0 to 9
9
Value that does not change
11
Round shape with all points equidistant
12
Sum divided by count
Down
2
Longest side of a right triangle
3
Mathematical statement of equality
4
Result of multiplication
5
Line touching circle at one point
6
Steepness of a line
8
Number with digits after a point
10
Visual representation of data