Across
1
Single numeral from 0 to 9
2
System of ordered marks for measuring
6
Round shape with all points equidistant
7
Sum divided by count
9
Symbol representing unknown value
10
Result of addition
Down
2
Collection of distinct elements
3
Divisible by two
4
Result of multiplication
5
Mathematical rule or equation
8
Reference line in a graph
11
Space between two intersecting lines
12
Mathematical statement of equality