Across
1
The number representing nothing
3
Middle value in an ordered dataset
5
Proven mathematical statement
7
Value that does not change
9
Power to which a number is raised
10
Rectangular array of numbers
12
Comparison of two quantities
14
U-shaped curve of a quadratic function
15
Collection of distinct elements
Down
2
Divisible by two
4
Number that divides evenly into another
6
Number less than zero
8
Split into equal parts
11
Result of multiplication
13
Line crossing from corner to corner