Across
1
Power to which a number is raised
4
Round shape with all points equidistant
6
Longest side of a right triangle
7
Single numeral from 0 to 9
8
Number with digits after a point
9
Reference line in a graph
Down
1
Mathematical statement of equality
2
Value that does not change
3
Part of a whole number
5
Three-sided polygon
10
Collection of distinct elements
11
Repeated addition
12
Rectangular array of numbers