Across
1
Part of a line with two endpoints
4
Divisible by two
7
Number divisible only by 1 and itself
8
Number that divides evenly into another
9
The number representing nothing
10
Proven mathematical statement
Down
2
Line touching circle at one point
3
Result of raising a number to an exponent
5
Difference between highest and lowest values
6
Longest side of a right triangle
11
Reference line in a graph
12
Single numeral from 0 to 9