Across
1
Collection of distinct elements
3
Three-sided polygon
4
Symbol representing unknown value
10
Math using letters for unknown values
11
Line touching circle at one point
12
Number less than zero
Down
1
Rectangle with four equal sides
2
Part of a whole number
5
Comparison of two quantities
6
Result of multiplication
7
Sum divided by count
8
Number greater than zero
9
Distance from center to edge of circle