Across
1
Exact correspondence on both sides
3
Round shape with all points equidistant
4
Line crossing from corner to corner
7
Symbol representing unknown value
11
Value that does not change
12
Single numeral from 0 to 9
Down
2
Result of multiplication
5
Visual representation of data
6
Reference line in a graph
8
Divisible by two
9
Closed shape with straight sides
10
Number greater than zero