Across
1
The number representing nothing
3
Result of multiplication
4
Number with digits after a point
6
Mathematical statement of equality
7
Number divisible only by 1 and itself
9
Value that does not change
Down
2
Mathematical rule or equation
4
Split into equal parts
5
Round shape with all points equidistant
8
Line touching circle at one point
10
Longest side of a right triangle
11
Power to which a number is raised
12
Collection of distinct elements