Across
1
Middle value in an ordered dataset
3
Exact correspondence on both sides
4
Number greater than zero
5
Three-sided polygon
6
Rectangular array of numbers
Down
1
Repeated addition
2
Number that divides evenly into another
3
System of ordered marks for measuring
7
Corner point of a polygon
8
The number representing nothing
9
Comparison of two quantities
10
Proven mathematical statement
11
Number less than zero