Across
1
Longest side of a right triangle
5
Middle value in an ordered dataset
7
Proven mathematical statement
8
Symbol representing unknown value
9
Sum divided by count
10
Number that divides evenly into another
11
Single numeral from 0 to 9
Down
2
Corner point of a polygon
3
Number greater than zero
4
Line touching circle at one point
5
Repeated addition
6
Split into equal parts