Across
1
Middle value in an ordered dataset
2
The number representing nothing
3
Collection of distinct elements
6
Mathematical rule or equation
7
Number less than zero
Down
1
Rectangular array of numbers
3
Steepness of a line
4
Three-sided polygon
5
Line touching circle at one point
8
Power to which a number is raised
9
Number with digits after a point
10
System of ordered marks for measuring