Across
1
Math using letters for unknown values
4
Collection of distinct elements
6
Number with digits after a point
7
Divisible by two
8
Mathematical rule or equation
10
Proven mathematical statement
Down
2
Split into equal parts
3
Symbol representing unknown value
4
Steepness of a line
5
Middle value in an ordered dataset
9
Part of a whole number
11
Sum divided by count