Across
1
Exact correspondence on both sides
4
Power to which a number is raised
5
Line touching circle at one point
8
Number that divides evenly into another
9
Mathematical rule or equation
10
Reference line in a graph
Down
2
Distance from center to edge of circle
3
Value that does not change
5
Proven mathematical statement
6
Space between two intersecting lines
7
Split into equal parts
11
Result of addition
12
Part of a line with two endpoints
13
Collection of distinct elements