Across
1
Middle value in an ordered dataset
4
Exact correspondence on both sides
5
Number greater than zero
6
Lines that never intersect
10
Result of addition
12
Number with digits after a point
Down
2
Number less than zero
3
Longest side of a right triangle
7
Amount of space an object occupies
8
Repeated addition
9
Line touching circle at one point
11
Math using letters for unknown values