Across
1
Number less than zero
6
Exact correspondence on both sides
7
Power to which a number is raised
13
Divisible by two
14
Line segment connecting two circle points
Down
2
Rectangular array of numbers
3
The number representing nothing
4
Number with digits after a point
5
Longest side of a right triangle
8
Math using letters for unknown values
9
Mathematical rule or equation
10
Middle value in an ordered dataset
11
Closed shape with straight sides
12
Collection of distinct elements