Across
1
Number that divides evenly into another
5
Mathematical rule or equation
6
Line touching circle at one point
11
Amount of space an object occupies
Down
2
Space between two intersecting lines
3
Single numeral from 0 to 9
4
Exact correspondence on both sides
7
The number representing nothing
8
Mathematical statement of equality
9
Longest side of a right triangle
10
Power to which a number is raised