Across
1
Number greater than zero
5
Lines that never intersect
7
Line touching circle at one point
9
Part of a line with two endpoints
12
Power to which a number is raised
Down
2
Rectangular array of numbers
3
Proven mathematical statement
4
Result of raising a number to an exponent
6
Space between two intersecting lines
8
Middle value in an ordered dataset
10
Exact correspondence on both sides
11
Value that does not change