Across
1
Rectangle with four equal sides
3
U-shaped curve of a quadratic function
4
Single numeral from 0 to 9
6
Middle value in an ordered dataset
7
Reference line in a graph
8
Divisible by two
9
Repeated addition
10
Power to which a number is raised
13
Comparison of two quantities
Down
2
Value that does not change
3
Number greater than zero
5
Rectangular array of numbers
11
Line crossing from corner to corner
12
Result of raising a number to an exponent
14
Exact correspondence on both sides