Across
1
Result of raising a number to an exponent
4
Number less than zero
5
Mathematical statement of equality
7
Sum divided by count
Down
2
Repeated addition
3
U-shaped curve of a quadratic function
6
Three-sided polygon
8
Rectangular array of numbers
9
Longest side of a right triangle
10
Corner point of a polygon
11
Split into equal parts
12
Middle value in an ordered dataset