Across
1
Math using letters for unknown values
3
Mathematical rule or equation
4
Repeated addition
8
Number divisible only by 1 and itself
9
Single numeral from 0 to 9
10
Reference line in a graph
12
Result of raising a number to an exponent
Down
1
Sum divided by count
2
Result of multiplication
5
Three-sided polygon
6
Distance from center to edge of circle
7
Closed shape with straight sides
11
Number with digits after a point