Across
1
Number that divides evenly into another
3
Number with digits after a point
6
Part of a circle's circumference
7
Visual representation of data
10
System of ordered marks for measuring
11
Exact correspondence on both sides
12
Proven mathematical statement
Down
2
Three-sided polygon
4
Space between two intersecting lines
5
The number representing nothing
8
Result of multiplication
9
Total distance around a shape