Across
1
Line segment connecting two circle points
3
Proven mathematical statement
4
Mathematical statement of equality
9
Part of a whole number
12
Number that divides evenly into another
13
Exact correspondence on both sides
Down
2
Mathematical rule or equation
5
Corner point of a polygon
6
Number with digits after a point
7
Part of a line with two endpoints
8
Single numeral from 0 to 9
10
Longest side of a right triangle
11
Split into equal parts