Across
1
Mathematical rule or equation
5
Split into equal parts
6
Visual representation of data
7
Part of a circle's circumference
9
Corner point of a polygon
11
Line touching circle at one point
12
Exact correspondence on both sides
Down
2
Steepness of a line
3
Symbol representing unknown value
4
Number divisible only by 1 and itself
8
Number greater than zero
10
Part of a line with two endpoints