Across
1
Number divisible only by 1 and itself
4
Difference between highest and lowest values
5
Split into equal parts
6
Collection of distinct elements
7
Comparison of two quantities
8
Line crossing from corner to corner
9
Line touching circle at one point
10
Round shape with all points equidistant
Down
2
Mathematical statement of equality
3
Three-sided polygon
5
Number with digits after a point
11
Symbol representing unknown value